FITS images used in this processing run:

Field UMa-04-Q2b1x1 reference image: UMa-04-Q2b1x1_2026-02-22_00-33-00_20.00sec_-14.90C_LIGHT_0278.fits
Field UMa-04-Q2b1x1 reference image: UMa-04-Q2b1x1_2026-02-22_00-34-07_20.00sec_-14.90C_LIGHT_0279.fits
Field UMa-04-Q2b1x1 second-epoch image: UMa-04-Q2b1x1_2026-08-05_23-52-36_20.00sec_-0.00C_LIGHT_0164.fits
Field UMa-04-Q2b1x1 second-epoch image: UMa-04-Q2b1x1_2026-08-05_23-53-40_20.00sec_-0.00C_LIGHT_0165.fits

## VaST run with SExtractor config file default.sex.telephoto_lens_onlybrightstars_v1 ##
Images processed 4
Images used for photometry 4
Ref.  image: 2461093.77304396 22.02.2026 06:33:00.998   /data_ssd/NMW-TexasTech/reference_imgs/UMa-04-Q2b1x1_2026-02-22_00-33-00_20.00sec_-14.90C_LIGHT_0278.fits
First image: 2461093.77304396 22.02.2026 06:33:00.998   /data_ssd/NMW-TexasTech/reference_imgs/UMa-04-Q2b1x1_2026-02-22_00-33-00_20.00sec_-14.90C_LIGHT_0278.fits
Last  image: 2461258.70405520 06.08.2026 04:53:40.369   /data_ssd/NMW-TexasTech/workdir//img_2026-08-06_CI_UMa-04-Q2b1x1_004716_TTUQ2b1x1_1093296_9mG5zxor/fd_UMa-04-Q2b1x1_2026-08-05_23-53-40_20.00sec_-0.00C_LIGHT_0165.fits
JD time system (TT/UTC/UNKNOWN): UTC
FILTER key from ref. img. header: CV
Magnitude scale: instrumental
Estimated ref. image limiting mag.:  -7.49
Magnitude-Size filter: Disabled
For each source choose aperture with the smallest scatter: YES
Photometric errors rescaling: NO
Number of identified bad images: 0
Number of SysRem iterations: 0
User-specified moving object: none
Computation time: 2 seconds
Number of parallel threads: 3
SExtractor parameter file: default.sex
Some important SExtractor parameters:
DETECT_MINAREA  10.0             # minimum number of pixels above threshold
DETECT_THRESH   10.0             #  or , in mag.arcsec-2
ANALYSIS_THRESH 10.0             #  or , in mag.arcsec-2
SATUR_LEVEL     55000.0         # level (in ADUs) at which arises saturation
GAIN            0.37            # detector gain in e-/ADU
VAST_SKIP_INDEX_VS_MAG is set - skipping the lib/index_vs_mag variability-index fitting
Total objects detected (at least 2 times):  5780
Objects passed selection criteria:  5735
Measurements per detected object (mean, median, min, max):    2.3    2.0    2    4
Measurements per selected object (mean, median, min, max):    2.3    2.0    2    4
Average stars detected per image: 3397.75
Average stars matched: 3228 (95.004 %)
Memory usage VmPeak:   232456 kB
Software: VaST 1.0rc90 compiled with gcc (Gentoo 15.2.1_p20260214 p5) 15.2.1 20260214
VaST compiled on  Wed Aug  5 15:05:04 CDT 2026
VaST build number  1.0rc89-189-g49d3cdfd
OpenMP enabled: Yes
SExtractor version 2.19.5 (2026-08-05)
GNU bash, version 5.3.9(1)-release (x86_64-pc-linux-gnu)
Processing completed on  Thu Aug  6 00:49:28 CDT 2026
Host name: tau
############################################################
WARNING: VaST exited with code 1 on the field UMa-04-Q2b1x1 after completing the measurements (memory cleanup crash); the transient search continues.
## VaST run with SExtractor config file default.sex.telephoto_lens_vSTL ##
Images processed 4
Images used for photometry 2
Ref.  image: 2461093.77304396 22.02.2026 06:33:00.998   /data_ssd/NMW-TexasTech/reference_imgs/UMa-04-Q2b1x1_2026-02-22_00-33-00_20.00sec_-14.90C_LIGHT_0278.fits
First image: 2461093.77304396 22.02.2026 06:33:00.998   /data_ssd/NMW-TexasTech/reference_imgs/UMa-04-Q2b1x1_2026-02-22_00-33-00_20.00sec_-14.90C_LIGHT_0278.fits
Last  image: 2461093.77381616 22.02.2026 06:34:07.716   /data_ssd/NMW-TexasTech/reference_imgs/UMa-04-Q2b1x1_2026-02-22_00-34-07_20.00sec_-14.90C_LIGHT_0279.fits
JD time system (TT/UTC/UNKNOWN): UTC
FILTER key from ref. img. header: CV
Magnitude scale: instrumental
Estimated ref. image limiting mag.:  -7.21
Magnitude-Size filter: Disabled
For each source choose aperture with the smallest scatter: YES
Photometric errors rescaling: NO
Number of identified bad images: 0
Number of SysRem iterations: 0
User-specified moving object: none
Computation time: 6 seconds
Number of parallel threads: 3
SExtractor parameter file: default.sex
Some important SExtractor parameters:
DETECT_MINAREA  2.0             # minimum number of pixels above threshold
DETECT_THRESH   3.0             #  or , in mag.arcsec-2
ANALYSIS_THRESH 3.0             #  or , in mag.arcsec-2
SATUR_LEVEL     57000.0         # level (in ADUs) at which arises saturation
GAIN            0.83            # detector gain in e-/ADU
WEIGHT_TYPE BACKGROUND
VAST_SKIP_INDEX_VS_MAG is set - skipping the lib/index_vs_mag variability-index fitting
Total objects detected (at least 2 times):  27809
Objects passed selection criteria:  27653
Measurements per detected object (mean, median, min, max):    2.0    2.0    2    2
Measurements per selected object (mean, median, min, max):    2.0    2.0    2    2
Average stars detected per image: 29812.5
Average stars matched: 28780.5 (96.5384 %)
Memory usage VmPeak:   254080 kB
Software: VaST 1.0rc90 compiled with gcc (Gentoo 15.2.1_p20260214 p5) 15.2.1 20260214
VaST compiled on  Wed Aug  5 15:05:04 CDT 2026
VaST build number  1.0rc89-189-g49d3cdfd
OpenMP enabled: Yes
SExtractor version 2.19.5 (2026-08-05)
GNU bash, version 5.3.9(1)-release (x86_64-pc-linux-gnu)
Processing completed on  Thu Aug  6 00:50:06 CDT 2026
Host name: tau
***** IMAGE PROCESSING ERROR (less than 4 images processed) *****
############################################################

######## Processing parameters ########
AAVSO_COMMENT_STRING= NMW-TexasTech Camera-2 135mm f/2.2 telephoto lens + QHY600M CMOS
ASTCHECK_ASTEROID_SEARCH_RADIUS_ARCSEC= 
BAD_REGION_FILE= /var/www/nmw_calibration/TTUQ2b1x1/TTUQ2_bad_region.lst
CAMERA_SETTINGS= TTUQ2b1x1
CHECK_POINTING_ACCURACY= yes
DARK_FRAMES_DIR_OR_FILE= /var/www/nmw_calibration/TTUQ2b1x1/darks
EXCLUSION_LIST= ../exclusion_list_TTUQ2.txt
FILTER_BAD_IMG__MAX_APERTURE_STAR_SIZE_PIX= 12.5
FILTER_BAD_IMG__MAX_ELONGATION_AminusB_PIX= 0.55
FILTER_BAD_IMG__MIN_APERTURE_STAR_SIZE_PIX= 2.0
FILTER_BRIGHT_MAG_CUTOFF_TRANSIENT_SEARCH= -5
FILTER_FAINT_MAG_CUTOFF_TRANSIENT_SEARCH= 15.5
FLAT_FIELD_DIR_OR_FILE= /var/www/nmw_calibration/TTUQ2b1x1/flats
FRAME_EDGE_OFFSET_PIX= 600
GAIA_BAND_FOR_CATALOGED_SOURCE_CHECK= 
MAX_NEW_TO_REF_MEAN_IMG_VALUE_RATIO= 100
DISABLE_NEW_TO_REF_MEAN_IMG_RATIO_CHECK= yes
MAX_NEW_IMG_MEAN_VALUE= 25000
MAX_SD_RATIO_OF_SECOND_EPOCH_IMGS= 0.18
MAX_SD_RATIO_OF_SECOND_EPOCH_IMGS_SOFT_LIMIT= 0.12
MPC_CODE= V36
NMW_CALIBRATION= /var/www/nmw_calibration
NUMBER_OF_DETECTED_TRANSIENTS_BEFORE_FILTERING_HARD_LIMIT= 10000
NUMBER_OF_DETECTED_TRANSIENTS_BEFORE_FILTERING_SOFT_LIMIT= 8000
OMP_NUM_THREADS= 3
ONLINE_MPCHECKER_BUTTON_ASTEROID_SEARCH_RADIUS_ARCMIN= 
PHOTOMETRIC_CALIBRATION= 
REQUIRE_PIX_SHIFT_BETWEEN_IMAGES_FOR_TRANSIENT_CANDIDATES= yes
SEXTRACTOR_CONFIG_BRIGHTSTARPASS= default.sex.telephoto_lens_onlybrightstars_v1
SEXTRACTOR_CONFIG_FILES= default.sex.telephoto_lens_onlybrightstars_v1 default.sex.telephoto_lens_vSTL
STARMATCH_RADIUS_PIX= 5
SYSREM_ITERATIONS= 0
TELESCOP= 
TELESCOP_NAME_KNOWN_TO_VaST_FOR_FOV_DETERMINATION= 
UCAC5_PLATESOLVE_ITERATIONS= 2
FPACK_FULLY_CALIBRATED_IMAGE= no
#######################################
HOSTNAME= tau
USER= 
HOME= 
#######################################
SExtractor catalog cache: enabled, directory /data_ssd/NMW-TexasTech/vast_sextractor_cache
Reference image directory is set to /data_ssd/NMW-TexasTech/reference_imgs
VIZIER_SITE=vizier.cds.unistra.fr
GAIA_DR2_CLIENT=vizquery (lib/vizquery -> VizieR vizier.cds.unistra.fr)
INFO: MAKE_PNG_PLOTS is set to yes
FITS_FILE_EXT=fits
CALIBRATION_STATUS_PREFIX=
Fields in the data directory: 
UMa-04-Q2b1x1
#######################################
########### Starting UMa-04-Q2b1x1 ###########
Processing UMa-04-Q2b1x1
server tau has sufficient free disk space available: 149865 MB at /data_ssd/NMW-TexasTech/workdir
server tau has sufficient free disk space available: 149865 MB at .
Checking input images (2 new)
REFERENCE_EPOCH__FIRST_IMAGE= /data_ssd/NMW-TexasTech/reference_imgs/UMa-04-Q2b1x1_2026-02-22_00-33-00_20.00sec_-14.90C_LIGHT_0278.fits
REFERENCE_EPOCH__SECOND_IMAGE= /data_ssd/NMW-TexasTech/reference_imgs/UMa-04-Q2b1x1_2026-02-22_00-34-07_20.00sec_-14.90C_LIGHT_0279.fits
Small preview (one of the new images): 

Large previews of the second-epoch (new) images:

MAKE_PNG_PLOTS=yes


renamed 'UMa-04-Q2b1x1_2026-08-05_23-52-36_20.00sec_-0.00C_LIGHT_0164.png' -> 'transient_report/UMa-04-Q2b1x1_2026-08-05_23-52-36_20.00sec_-0.00C_LIGHT_0164.fits_preview.png'

UMa-04-Q2b1x1_2026-08-05_23-52-36_20.00sec_-0.00C_LIGHT_0164.fits


renamed 'UMa-04-Q2b1x1_2026-08-05_23-53-40_20.00sec_-0.00C_LIGHT_0165.png' -> 'transient_report/UMa-04-Q2b1x1_2026-08-05_23-53-40_20.00sec_-0.00C_LIGHT_0165.fits_preview.png'

UMa-04-Q2b1x1_2026-08-05_23-53-40_20.00sec_-0.00C_LIGHT_0165.fits




Read-check the input FITS images... read-check OK
Blank image check the input FITS images... blank-image-check OK
Read date check the input FITS images... read-date-check OK
Mean value check the input FITS images... OK, at least two new images have mean values below the threshold.
----------------------------------------------
INFO: REFERENCE_EPOCH__FIRST_IMAGE_MEAN_VALUE= 482.7200
INFO:         REFERENCE_EPOCH__FIRST_IMAGE_SD= 528.8252
INFO:    SECOND_EPOCH__FIRST_IMAGE_MEAN_VALUE= 1245.6497
INFO:            SECOND_EPOCH__FIRST_IMAGE_SD= 268.3202
INFO:   SECOND_EPOCH__SECOND_IMAGE_MEAN_VALUE= 1244.5495
INFO:           SECOND_EPOCH__SECOND_IMAGE_SD= 268.3501
----------------------------------------------
INFO:      ref_to_second_epoch_img_mean_ratio= 2.58048
INFO:                  SECOND_EPOCH__SD_ratio= 0.000
INFO: the new-to-reference mean image value ratio check is disabled (DISABLE_NEW_TO_REF_MEAN_IMG_RATIO_CHECK=yes) - expected with a background-subtracted reference image
----------------------------------------------
Calibration settings: DARK_FRAMES_DIR_OR_FILE=/var/www/nmw_calibration/TTUQ2b1x1/darks FLAT_FIELD_DIR_OR_FILE=/var/www/nmw_calibration/TTUQ2b1x1/flats
EXPTIME =                 20.0 / [s] Exposure duration
SET-TEMP=                  0.0 / [degC] CCD temperature setpoint
CCD-TEMP=                 -0.0 / [degC] CCD temperature
FOCTEMP =     27.2099990844727 / [degC] Focuser temperature
Exploring image header: /data_ssd/NMW-TexasTech/workdir//img_2026-08-06_CI_UMa-04-Q2b1x1_004716_TTUQ2b1x1_1093296_9mG5zxor/UMa-04-Q2b1x1_2026-08-05_23-52-36_20.00sec_-0.00C_LIGHT_0164.fits 
CCD-TEMP= -0.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-08-06_CI_UMa-04-Q2b1x1_004716_TTUQ2b1x1_1093296_9mG5zxor/UMa-04-Q2b1x1_2026-08-05_23-52-36_20.00sec_-0.00C_LIGHT_0164.fits
SET-TEMP= 0.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-08-06_CI_UMa-04-Q2b1x1_004716_TTUQ2b1x1_1093296_9mG5zxor/UMa-04-Q2b1x1_2026-08-05_23-52-36_20.00sec_-0.00C_LIGHT_0164.fits
Header: 67 keys total, 4 keys left
Record 0: "" status=0
Record 1: "SIMPLE  =                    T / C# FITS" status=0
Record 2: "BITPIX  =                   16" status=0
Record 3: "NAXIS   =                    2 / Dimensionality" status=0
Record 4: "NAXIS1  =                 9576" status=0
Record 5: "NAXIS2  =                 6388" status=0
Record 6: "BZERO   =                32768" status=0
Record 7: "EXTEND  =                    T / Extensions are permitted" status=0
Record 8: "IMAGETYP= 'LIGHT'              / Type of exposure" status=0
Record 9: "EXPOSURE=                 20.0 / [s] Exposure duration" status=0
Record 10: "EXPTIME =                 20.0 / [s] Exposure duration" status=0
Record 11: "DATE-LOC= '2026-08-05T23:52:36.2678875' / Time of observation (local)" status=0
Record 12: "DATE-OBS= '2026-08-06T04:52:36.2678875' / Time of observation (UTC)" status=0
Record 13: "MJD-OBS =     61258.2031975347 / Modified Julian Date of observation" status=0
Record 14: "DATE-AVG= '2026-08-06T04:52:46.1713898' / Averaged midpoint time (UTC)" status=0
Record 15: "MJD-AVG =     61258.2033121642 / Modified Julian Date of averaged midpoint" status=0
Record 16: "XBINNING=                    1 / X axis binning factor" status=0
Record 17: "YBINNING=                    1 / Y axis binning factor" status=0
Record 18: "GAIN    =                   30 / Sensor gain" status=0
Record 19: "OFFSET  =                   30 / Sensor gain offset" status=0
Record 20: "XPIXSZ  =                 3.76 / [um] Pixel X axis size" status=0
Record 21: "YPIXSZ  =                 3.76 / [um] Pixel Y axis size" status=0
Record 22: "INSTRUME= 'QHY600M'            / Imaging instrument name" status=0
Record 23: "CAMERAID= 'QHY600M-84137c4dbbbd119a9' / Imaging instrument identifier" status=0
Record 24: "SET-TEMP=                  0.0 / [degC] CCD temperature setpoint" status=0
Record 25: "CCD-TEMP=                 -0.0 / [degC] CCD temperature" status=0
Record 26: "READOUTM= '2CMS-0'             / Sensor readout mode" status=0
Record 27: "USBLIMIT=                   50 / Camera-specific USB setting" status=0
Record 28: "TELESCOP= 'QHY600M-TTU2'       / Name of telescope" status=0
Record 29: "FOCALLEN=                135.0 / [mm] Focal length" status=0
Record 30: "FOCRATIO=                  2.2 / Focal ratio" status=0
Record 31: "RA      =     179.998699227722 / [deg] RA of telescope" status=0
Record 32: "DEC     =      61.999763967583 / [deg] Declination of telescope" status=0
Record 33: "CENTALT =     22.5694444444444 / [deg] Altitude of telescope" status=0
Record 34: "CENTAZ  =     330.541111111111 / [deg] Azimuth of telescope" status=0
Record 35: "AIRMASS =     2.59082662630158 / Airmass at frame center (Gueymard 1993)" status=0
Record 36: "PIERSIDE= 'East'               / Telescope pointing state" status=0
Record 37: "SITEELEV=               1009.5 / [m] Observation site elevation" status=0
Record 38: "SITELAT =           33.7482925 / [deg] Observation site latitude" status=0
Record 39: "SITELONG=          -101.958319 / [deg] Observation site longitude" status=0
Record 40: "OBSERVER= 'Sokolovsky'         / Observer name" status=0
Record 41: "OBSERVAT= 'TTU Skyview'        / Observatory name" status=0
Record 42: "SITENAME= ''                   / Observatory site name" status=0
Record 43: "FWHEEL  = 'Simulator'          / Filter Wheel name" status=0
Record 44: "FILTER  = 'CV'                 / Active filter name" status=0
Record 45: "OBJECT  = 'UMa-04'             / Name of the object of interest" status=0
Record 46: "OBJCTRA = '12 00 00'           / [H M S] RA of imaged object" status=0
Record 47: "OBJCTDEC= '+62 00 00'          / [D M S] Declination of imaged object" status=0
Record 48: "OBJCTROT=                  0.0 / [deg] planned rotation of imaged object" status=0
Record 49: "FOCNAME = 'ZWO Focuser'        / Focusing equipment name" status=0
Record 50: "FOCPOS  =                20482 / [step] Focuser position" status=0
Record 51: "FOCUSPOS=                20482 / [step] Focuser position" status=0
Record 52: "FOCUSSZ =                  0.0 / [um] Focuser step size" status=0
Record 53: "FOCTEMP =     27.2099990844727 / [degC] Focuser temperature" status=0
Record 54: "FOCUSTEM=     27.2099990844727 / [degC] Focuser temperature" status=0
Record 55: "ROWORDER= 'TOP-DOWN'           / FITS Image Orientation" status=0
Record 56: "EQUINOX =               2000.0 / Equinox of celestial coordinate system" status=0
Record 57: "SWCREATE= 'N.I.N.A. 3.2.0.9001 (x64)' / Software that created this file" status=0
Record 58: "QHY_EXP =            20.000096 / [s] Actual exposure time" status=0
Record 59: "QHY_PP  =              13888.0 / [ps] pixelPeriod" status=0
Record 60: "QHY_LP  =              85000.0 / [ns] linePeriod" status=0
Record 61: "GPS_LP  =              85000.0 / [ns] linePeriod" status=0
Record 62: "QHY_FP  =           20000160.0 / [us] framePeriod" status=0
Record 63: "QHY_CPL =               6120.0 / clocksPerLine" status=0
Record 64: "QHY_LPF =             235295.0 / linesPerFrame" status=0
Record 65: "QHY_AET =           20000096.0 / [us] actualExposureTime" status=0
Record 66: "QHY_LEM =                    T / isLongExposureMode" status=0
Record 67: "QHY_OFF0=             3767.777 / [us] RollingShutterEndOffset row 0" status=0
Allocating memory for image, dark and result arrays...
Reading image /data_ssd/NMW-TexasTech/workdir//img_2026-08-06_CI_UMa-04-Q2b1x1_004716_TTUQ2b1x1_1093296_9mG5zxor/UMa-04-Q2b1x1_2026-08-05_23-52-36_20.00sec_-0.00C_LIGHT_0164.fits 9576 6388  16 bitpix
SET-TEMP= 0.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-08-06_CI_UMa-04-Q2b1x1_004716_TTUQ2b1x1_1093296_9mG5zxor/UMa-04-Q2b1x1_2026-08-05_23-52-36_20.00sec_-0.00C_LIGHT_0164.fits
SET-TEMP= 0.000000 for /var/www/nmw_calibration/TTUQ2b1x1/darks/mdark_TTUQ2b1x1_0C_20s_2026-07-30.fit
CCD-TEMP= -0.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-08-06_CI_UMa-04-Q2b1x1_004716_TTUQ2b1x1_1093296_9mG5zxor/UMa-04-Q2b1x1_2026-08-05_23-52-36_20.00sec_-0.00C_LIGHT_0164.fits
CCD-TEMP= -0.000000 for /var/www/nmw_calibration/TTUQ2b1x1/darks/mdark_TTUQ2b1x1_0C_20s_2026-07-30.fit
Reading dark frame /var/www/nmw_calibration/TTUQ2b1x1/darks/mdark_TTUQ2b1x1_0C_20s_2026-07-30.fit 9576 6388  16 bitpix
Dark frame is subtracted, output is written to /data_ssd/NMW-TexasTech/workdir//img_2026-08-06_CI_UMa-04-Q2b1x1_004716_TTUQ2b1x1_1093296_9mG5zxor/d_UMa-04-Q2b1x1_2026-08-05_23-52-36_20.00sec_-0.00C_LIGHT_0164.fits :)

Spent 0.575791 seconds 
renamed 'mdark_TTUQ2b1x1_0C_20s_2026-07-30.png' -> 'transient_report/dark.png'
try_to_calibrate_the_input_frame(): selected flat field /var/www/nmw_calibration/TTUQ2b1x1/flats/mff_TTUQ2b1x1_2026-07-30.fit from directory /var/www/nmw_calibration/TTUQ2b1x1/flats
MegaDivider v7
Reading image /data_ssd/NMW-TexasTech/workdir//img_2026-08-06_CI_UMa-04-Q2b1x1_004716_TTUQ2b1x1_1093296_9mG5zxor/d_UMa-04-Q2b1x1_2026-08-05_23-52-36_20.00sec_-0.00C_LIGHT_0164.fits 9576 6388  16 bitpix
Reading flat /var/www/nmw_calibration/TTUQ2b1x1/flats/mff_TTUQ2b1x1_2026-07-30.fit 9576 6388  16 bitpix
Avarage count on flat field image: 19899.553568
Minimal real count (from overscan): 5
Output is written to /data_ssd/NMW-TexasTech/workdir//img_2026-08-06_CI_UMa-04-Q2b1x1_004716_TTUQ2b1x1_1093296_9mG5zxor/fd_UMa-04-Q2b1x1_2026-08-05_23-52-36_20.00sec_-0.00C_LIGHT_0164.fits :)


No overscan detected - all values seem high! (left_median=13115.0, right_median=15628.5)
renamed 'mff_TTUQ2b1x1_2026-07-30.png' -> 'transient_report/flat.png'
Using calibrated image CALIBRATED_SECOND_EPOCH__FIRST_IMAGE=/data_ssd/NMW-TexasTech/workdir//img_2026-08-06_CI_UMa-04-Q2b1x1_004716_TTUQ2b1x1_1093296_9mG5zxor/fd_UMa-04-Q2b1x1_2026-08-05_23-52-36_20.00sec_-0.00C_LIGHT_0164.fits
EXPTIME =                 20.0 / [s] Exposure duration
SET-TEMP=                  0.0 / [degC] CCD temperature setpoint
CCD-TEMP=                 -0.0 / [degC] CCD temperature
FOCTEMP =     27.1800003051758 / [degC] Focuser temperature
Exploring image header: /data_ssd/NMW-TexasTech/workdir//img_2026-08-06_CI_UMa-04-Q2b1x1_004716_TTUQ2b1x1_1093296_9mG5zxor/UMa-04-Q2b1x1_2026-08-05_23-53-40_20.00sec_-0.00C_LIGHT_0165.fits 
CCD-TEMP= -0.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-08-06_CI_UMa-04-Q2b1x1_004716_TTUQ2b1x1_1093296_9mG5zxor/UMa-04-Q2b1x1_2026-08-05_23-53-40_20.00sec_-0.00C_LIGHT_0165.fits
SET-TEMP= 0.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-08-06_CI_UMa-04-Q2b1x1_004716_TTUQ2b1x1_1093296_9mG5zxor/UMa-04-Q2b1x1_2026-08-05_23-53-40_20.00sec_-0.00C_LIGHT_0165.fits
Header: 67 keys total, 4 keys left
Record 0: "" status=0
Record 1: "SIMPLE  =                    T / C# FITS" status=0
Record 2: "BITPIX  =                   16" status=0
Record 3: "NAXIS   =                    2 / Dimensionality" status=0
Record 4: "NAXIS1  =                 9576" status=0
Record 5: "NAXIS2  =                 6388" status=0
Record 6: "BZERO   =                32768" status=0
Record 7: "EXTEND  =                    T / Extensions are permitted" status=0
Record 8: "IMAGETYP= 'LIGHT'              / Type of exposure" status=0
Record 9: "EXPOSURE=                 20.0 / [s] Exposure duration" status=0
Record 10: "EXPTIME =                 20.0 / [s] Exposure duration" status=0
Record 11: "DATE-LOC= '2026-08-05T23:53:40.3698644' / Time of observation (local)" status=0
Record 12: "DATE-OBS= '2026-08-06T04:53:40.3698644' / Time of observation (UTC)" status=0
Record 13: "MJD-OBS =      61258.203939456 / Modified Julian Date of observation" status=0
Record 14: "DATE-AVG= '2026-08-06T04:53:50.2753220' / Averaged midpoint time (UTC)" status=0
Record 15: "MJD-AVG =     61258.2040541088 / Modified Julian Date of averaged midpoint" status=0
Record 16: "XBINNING=                    1 / X axis binning factor" status=0
Record 17: "YBINNING=                    1 / Y axis binning factor" status=0
Record 18: "GAIN    =                   30 / Sensor gain" status=0
Record 19: "OFFSET  =                   30 / Sensor gain offset" status=0
Record 20: "XPIXSZ  =                 3.76 / [um] Pixel X axis size" status=0
Record 21: "YPIXSZ  =                 3.76 / [um] Pixel Y axis size" status=0
Record 22: "INSTRUME= 'QHY600M'            / Imaging instrument name" status=0
Record 23: "CAMERAID= 'QHY600M-84137c4dbbbd119a9' / Imaging instrument identifier" status=0
Record 24: "SET-TEMP=                  0.0 / [degC] CCD temperature setpoint" status=0
Record 25: "CCD-TEMP=                 -0.0 / [degC] CCD temperature" status=0
Record 26: "READOUTM= '2CMS-0'             / Sensor readout mode" status=0
Record 27: "USBLIMIT=                   50 / Camera-specific USB setting" status=0
Record 28: "TELESCOP= 'QHY600M-TTU2'       / Name of telescope" status=0
Record 29: "FOCALLEN=                135.0 / [mm] Focal length" status=0
Record 30: "FOCRATIO=                  2.2 / Focal ratio" status=0
Record 31: "RA      =     179.998699313558 / [deg] RA of telescope" status=0
Record 32: "DEC     =     61.9997640143323 / [deg] Declination of telescope" status=0
Record 33: "CENTALT =     22.4602777777778 / [deg] Altitude of telescope" status=0
Record 34: "CENTAZ  =     330.609444444444 / [deg] Azimuth of telescope" status=0
Record 35: "AIRMASS =     2.60259835007818 / Airmass at frame center (Gueymard 1993)" status=0
Record 36: "PIERSIDE= 'East'               / Telescope pointing state" status=0
Record 37: "SITEELEV=               1009.5 / [m] Observation site elevation" status=0
Record 38: "SITELAT =           33.7482925 / [deg] Observation site latitude" status=0
Record 39: "SITELONG=          -101.958319 / [deg] Observation site longitude" status=0
Record 40: "OBSERVER= 'Sokolovsky'         / Observer name" status=0
Record 41: "OBSERVAT= 'TTU Skyview'        / Observatory name" status=0
Record 42: "SITENAME= ''                   / Observatory site name" status=0
Record 43: "FWHEEL  = 'Simulator'          / Filter Wheel name" status=0
Record 44: "FILTER  = 'CV'                 / Active filter name" status=0
Record 45: "OBJECT  = 'UMa-04'             / Name of the object of interest" status=0
Record 46: "OBJCTRA = '12 00 00'           / [H M S] RA of imaged object" status=0
Record 47: "OBJCTDEC= '+62 00 00'          / [D M S] Declination of imaged object" status=0
Record 48: "OBJCTROT=                  0.0 / [deg] planned rotation of imaged object" status=0
Record 49: "FOCNAME = 'ZWO Focuser'        / Focusing equipment name" status=0
Record 50: "FOCPOS  =                20482 / [step] Focuser position" status=0
Record 51: "FOCUSPOS=                20482 / [step] Focuser position" status=0
Record 52: "FOCUSSZ =                  0.0 / [um] Focuser step size" status=0
Record 53: "FOCTEMP =     27.1800003051758 / [degC] Focuser temperature" status=0
Record 54: "FOCUSTEM=     27.1800003051758 / [degC] Focuser temperature" status=0
Record 55: "ROWORDER= 'TOP-DOWN'           / FITS Image Orientation" status=0
Record 56: "EQUINOX =               2000.0 / Equinox of celestial coordinate system" status=0
Record 57: "SWCREATE= 'N.I.N.A. 3.2.0.9001 (x64)' / Software that created this file" status=0
Record 58: "QHY_EXP =            20.000096 / [s] Actual exposure time" status=0
Record 59: "QHY_PP  =              13888.0 / [ps] pixelPeriod" status=0
Record 60: "QHY_LP  =              85000.0 / [ns] linePeriod" status=0
Record 61: "GPS_LP  =              85000.0 / [ns] linePeriod" status=0
Record 62: "QHY_FP  =           20000160.0 / [us] framePeriod" status=0
Record 63: "QHY_CPL =               6120.0 / clocksPerLine" status=0
Record 64: "QHY_LPF =             235295.0 / linesPerFrame" status=0
Record 65: "QHY_AET =           20000096.0 / [us] actualExposureTime" status=0
Record 66: "QHY_LEM =                    T / isLongExposureMode" status=0
Record 67: "QHY_OFF0=             3767.777 / [us] RollingShutterEndOffset row 0" status=0
Allocating memory for image, dark and result arrays...
Reading image /data_ssd/NMW-TexasTech/workdir//img_2026-08-06_CI_UMa-04-Q2b1x1_004716_TTUQ2b1x1_1093296_9mG5zxor/UMa-04-Q2b1x1_2026-08-05_23-53-40_20.00sec_-0.00C_LIGHT_0165.fits 9576 6388  16 bitpix
SET-TEMP= 0.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-08-06_CI_UMa-04-Q2b1x1_004716_TTUQ2b1x1_1093296_9mG5zxor/UMa-04-Q2b1x1_2026-08-05_23-53-40_20.00sec_-0.00C_LIGHT_0165.fits
SET-TEMP= 0.000000 for /var/www/nmw_calibration/TTUQ2b1x1/darks/mdark_TTUQ2b1x1_0C_20s_2026-07-30.fit
CCD-TEMP= -0.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-08-06_CI_UMa-04-Q2b1x1_004716_TTUQ2b1x1_1093296_9mG5zxor/UMa-04-Q2b1x1_2026-08-05_23-53-40_20.00sec_-0.00C_LIGHT_0165.fits
CCD-TEMP= -0.000000 for /var/www/nmw_calibration/TTUQ2b1x1/darks/mdark_TTUQ2b1x1_0C_20s_2026-07-30.fit
Reading dark frame /var/www/nmw_calibration/TTUQ2b1x1/darks/mdark_TTUQ2b1x1_0C_20s_2026-07-30.fit 9576 6388  16 bitpix
Dark frame is subtracted, output is written to /data_ssd/NMW-TexasTech/workdir//img_2026-08-06_CI_UMa-04-Q2b1x1_004716_TTUQ2b1x1_1093296_9mG5zxor/d_UMa-04-Q2b1x1_2026-08-05_23-53-40_20.00sec_-0.00C_LIGHT_0165.fits :)

Spent 0.595604 seconds 
renamed 'mdark_TTUQ2b1x1_0C_20s_2026-07-30.png' -> 'transient_report/dark.png'
try_to_calibrate_the_input_frame(): selected flat field /var/www/nmw_calibration/TTUQ2b1x1/flats/mff_TTUQ2b1x1_2026-07-30.fit from directory /var/www/nmw_calibration/TTUQ2b1x1/flats
MegaDivider v7
Reading image /data_ssd/NMW-TexasTech/workdir//img_2026-08-06_CI_UMa-04-Q2b1x1_004716_TTUQ2b1x1_1093296_9mG5zxor/d_UMa-04-Q2b1x1_2026-08-05_23-53-40_20.00sec_-0.00C_LIGHT_0165.fits 9576 6388  16 bitpix
Reading flat /var/www/nmw_calibration/TTUQ2b1x1/flats/mff_TTUQ2b1x1_2026-07-30.fit 9576 6388  16 bitpix
Avarage count on flat field image: 19899.553568
Minimal real count (from overscan): 5
Output is written to /data_ssd/NMW-TexasTech/workdir//img_2026-08-06_CI_UMa-04-Q2b1x1_004716_TTUQ2b1x1_1093296_9mG5zxor/fd_UMa-04-Q2b1x1_2026-08-05_23-53-40_20.00sec_-0.00C_LIGHT_0165.fits :)


No overscan detected - all values seem high! (left_median=13115.0, right_median=15628.5)
renamed 'mff_TTUQ2b1x1_2026-07-30.png' -> 'transient_report/flat.png'
Using calibrated image CALIBRATED_SECOND_EPOCH__SECOND_IMAGE=/data_ssd/NMW-TexasTech/workdir//img_2026-08-06_CI_UMa-04-Q2b1x1_004716_TTUQ2b1x1_1093296_9mG5zxor/fd_UMa-04-Q2b1x1_2026-08-05_23-53-40_20.00sec_-0.00C_LIGHT_0165.fits
Dark frame used to calibrate the second-epoch images:



Flat field used to calibrate the second-epoch images:



after the calibration attempt:
SECOND_EPOCH__FIRST_IMAGE=/data_ssd/NMW-TexasTech/workdir//img_2026-08-06_CI_UMa-04-Q2b1x1_004716_TTUQ2b1x1_1093296_9mG5zxor/fd_UMa-04-Q2b1x1_2026-08-05_23-52-36_20.00sec_-0.00C_LIGHT_0164.fits
SECOND_EPOCH__SECOND_IMAGE=/data_ssd/NMW-TexasTech/workdir//img_2026-08-06_CI_UMa-04-Q2b1x1_004716_TTUQ2b1x1_1093296_9mG5zxor/fd_UMa-04-Q2b1x1_2026-08-05_23-53-40_20.00sec_-0.00C_LIGHT_0165.fits
Previews of the CALIBRATED second-epoch images:


fd_UMa-04-Q2b1x1_2026-08-05_23-52-36_20.00sec_-0.00C_LIGHT_0164.fits



fd_UMa-04-Q2b1x1_2026-08-05_23-53-40_20.00sec_-0.00C_LIGHT_0165.fits




Updating neverexclude_list.txt
'/var/www/nmw_calibration/neverexclude_list.txt' -> './neverexclude_list.txt'
Choosing bad regions list
'/var/www/nmw_calibration/TTUQ2b1x1/TTUQ2_bad_region.lst' -> 'bad_region.lst'
wait
*------ default.sex.telephoto_lens_onlybrightstars_v1 ------*
'default.sex.telephoto_lens_onlybrightstars_v1' -> 'default.sex'
Starting VaST with default.sex.telephoto_lens_onlybrightstars_v1

  ./vast --noflagimage --starmatchraius 5 --matchstarnumber 500 --selectbestaperture --sysrem 0 --type 4 --maxsextractorflag 99 --UTC --nofind --nojdkeyword /data_ssd/NMW-TexasTech/reference_imgs/UMa-04-Q2b1x1_2026-02-22_00-33-00_20.00sec_-14.90C_LIGHT_0278.fits /data_ssd/NMW-TexasTech/reference_imgs/UMa-04-Q2b1x1_2026-02-22_00-34-07_20.00sec_-14.90C_LIGHT_0279.fits /data_ssd/NMW-TexasTech/workdir//img_2026-08-06_CI_UMa-04-Q2b1x1_004716_TTUQ2b1x1_1093296_9mG5zxor/fd_UMa-04-Q2b1x1_2026-08-05_23-52-36_20.00sec_-0.00C_LIGHT_0164.fits /data_ssd/NMW-TexasTech/workdir//img_2026-08-06_CI_UMa-04-Q2b1x1_004716_TTUQ2b1x1_1093296_9mG5zxor/fd_UMa-04-Q2b1x1_2026-08-05_23-53-40_20.00sec_-0.00C_LIGHT_0165.fits
  
SExtractor catalog cache: saved UMa-04-Q2b1x1_2026-02-22_00-33-00_20.00sec_-14.90C_LIGHT_0278.fits.cat to cache
SExtractor catalog cache: saved UMa-04-Q2b1x1_2026-02-22_00-34-07_20.00sec_-14.90C_LIGHT_0279.fits.cat to cache
VaST run complete with default.sex.telephoto_lens_onlybrightstars_v1
The four input images were /data_ssd/NMW-TexasTech/reference_imgs/UMa-04-Q2b1x1_2026-02-22_00-33-00_20.00sec_-14.90C_LIGHT_0278.fits /data_ssd/NMW-TexasTech/reference_imgs/UMa-04-Q2b1x1_2026-02-22_00-34-07_20.00sec_-14.90C_LIGHT_0279.fits /data_ssd/NMW-TexasTech/workdir//img_2026-08-06_CI_UMa-04-Q2b1x1_004716_TTUQ2b1x1_1093296_9mG5zxor/fd_UMa-04-Q2b1x1_2026-08-05_23-52-36_20.00sec_-0.00C_LIGHT_0164.fits /data_ssd/NMW-TexasTech/workdir//img_2026-08-06_CI_UMa-04-Q2b1x1_004716_TTUQ2b1x1_1093296_9mG5zxor/fd_UMa-04-Q2b1x1_2026-08-05_23-53-40_20.00sec_-0.00C_LIGHT_0165.fits
Checking WCS cache directory local_wcs_cache
Checking WCS cache directory /mnt/usb/NMW_NG/solved_reference_images
Found WCS cache directory /mnt/usb/NMW_NG/solved_reference_images
Checking WCS cache directory /home/NMW_web_upload/solved_reference_images
Checking WCS cache directory /dataX/kirx/NMW_NG_rt3_autumn2019/solved_reference_images
The reference JD(UT) for computing planet and comet positions: 2461258.70331328
Re-using ../asassn_transients_list.txt
'../asassn_transients_list.txt' -> 'asassn_transients_list.txt'
Re-using ../tocp_transients_list.txt
'../tocp_transients_list.txt' -> 'tocp_transients_list.txt'
Re-using ../tns_transients_list.txt
'../tns_transients_list.txt' -> 'tns_transients_list.txt'
Plate-solving the images
wcs_UMa-04-Q2b1x1_2026-02-22_00-33-00_20.00sec_-14.90C_LIGHT_0278.fits exists and is non-empty
Saving wcs_UMa-04-Q2b1x1_2026-02-22_00-33-00_20.00sec_-14.90C_LIGHT_0278.fits to local_wcs_cache/
'wcs_UMa-04-Q2b1x1_2026-02-22_00-33-00_20.00sec_-14.90C_LIGHT_0278.fits' -> 'local_wcs_cache/wcs_UMa-04-Q2b1x1_2026-02-22_00-33-00_20.00sec_-14.90C_LIGHT_0278.fits'
wcs_UMa-04-Q2b1x1_2026-02-22_00-34-07_20.00sec_-14.90C_LIGHT_0279.fits exists and is non-empty
Saving wcs_UMa-04-Q2b1x1_2026-02-22_00-34-07_20.00sec_-14.90C_LIGHT_0279.fits to local_wcs_cache/
'wcs_UMa-04-Q2b1x1_2026-02-22_00-34-07_20.00sec_-14.90C_LIGHT_0279.fits' -> 'local_wcs_cache/wcs_UMa-04-Q2b1x1_2026-02-22_00-34-07_20.00sec_-14.90C_LIGHT_0279.fits'
wcs_fd_UMa-04-Q2b1x1_2026-08-05_23-52-36_20.00sec_-0.00C_LIGHT_0164.fits exists and is non-empty
Saving wcs_fd_UMa-04-Q2b1x1_2026-08-05_23-52-36_20.00sec_-0.00C_LIGHT_0164.fits to local_wcs_cache/
'wcs_fd_UMa-04-Q2b1x1_2026-08-05_23-52-36_20.00sec_-0.00C_LIGHT_0164.fits' -> 'local_wcs_cache/wcs_fd_UMa-04-Q2b1x1_2026-08-05_23-52-36_20.00sec_-0.00C_LIGHT_0164.fits'
wcs_fd_UMa-04-Q2b1x1_2026-08-05_23-53-40_20.00sec_-0.00C_LIGHT_0165.fits exists and is non-empty
Saving wcs_fd_UMa-04-Q2b1x1_2026-08-05_23-53-40_20.00sec_-0.00C_LIGHT_0165.fits to local_wcs_cache/
'wcs_fd_UMa-04-Q2b1x1_2026-08-05_23-53-40_20.00sec_-0.00C_LIGHT_0165.fits' -> 'local_wcs_cache/wcs_fd_UMa-04-Q2b1x1_2026-08-05_23-53-40_20.00sec_-0.00C_LIGHT_0165.fits'
###################################
# fov_of_wcs_calibrated_image.sh output for wcs_UMa-04-Q2b1x1_2026-02-22_00-33-00_20.00sec_-14.90C_LIGHT_0278.fits (1st reference image)
verification OK: wcs_UMa-04-Q2b1x1_2026-02-22_00-33-00_20.00sec_-14.90C_LIGHT_0278.fits
Image size: 941.9'x627.2'  15.7(deg)x10.5(deg)  9576x6388 pix
Image scale: 5.90"/pix along the X axis and 5.89"/pix along the Y axis
Image center: 12:00:03.636 +62:00:23.32 J2000 4789.000 3195.000 
###################################
The image scale is 5.90"/pix, setting the soft and hard astrometric limits for filtering second-epoch detections: 5.9" and 8.9"
###################################
# fov_of_wcs_calibrated_image.sh output for wcs_fd_UMa-04-Q2b1x1_2026-08-05_23-52-36_20.00sec_-0.00C_LIGHT_0164.fits (1st new image)
verification OK: wcs_fd_UMa-04-Q2b1x1_2026-08-05_23-52-36_20.00sec_-0.00C_LIGHT_0164.fits
Image size: 938.0'x624.2'  15.6(deg)x10.4(deg)  9576x6388 pix
Image scale: 5.88"/pix along the X axis and 5.86"/pix along the Y axis
Image center: 12:00:11.565 +62:03:16.98 J2000 4789.000 3195.000 
###################################
###################################
# Check the image center offset between the reference and the first second-epoch image (pointing accuracy)
Reference image center 12:00:03.636 +62:00:23.32
Second-epoch image center 12:00:11.565 +62:03:16.98
Angular distance between the image centers 0.0507 deg.
Soft limit: 0.50 deg.  Hard limit: 1.00 deg.
###################################
###################################
# fov_of_wcs_calibrated_image.sh output for wcs_fd_UMa-04-Q2b1x1_2026-08-05_23-53-40_20.00sec_-0.00C_LIGHT_0165.fits (2nd new image)
verification OK: wcs_fd_UMa-04-Q2b1x1_2026-08-05_23-53-40_20.00sec_-0.00C_LIGHT_0165.fits
Image size: 938.0'x624.2'  15.6(deg)x10.4(deg)  9576x6388 pix
Image scale: 5.88"/pix along the X axis and 5.86"/pix along the Y axis
Image center: 12:00:12.476 +62:03:17.42 J2000 4789.000 3195.000 
###################################
###################################
# Check the image center offset between the reference and the second second-epoch image (pointing accuracy)
Reference image center 12:00:03.636 +62:00:23.32
Second-epoch image center 12:00:12.476 +62:03:17.42
Angular distance between the image centers 0.0514 deg.
###################################
###################################
# Check the image center offset between the first and the second second-epoch image (shift should be applied between the second-epoch images)
Second-epoch first image center  12:00:11.565 +62:03:16.98
Second-epoch second image center 12:00:12.476 +62:03:17.42
Angular distance between the image centers 0.00178 deg.
###################################
Running solve_plate_with_UCAC5...
Preparing for a parallel run
Running  util/solve_plate_with_UCAC5 --no_photometric_catalog --iterations 2  /data_ssd/NMW-TexasTech/reference_imgs/UMa-04-Q2b1x1_2026-02-22_00-33-00_20.00sec_-14.90C_LIGHT_0278.fits &> /tmp/tmp.M8jltgMKjd
Parallel run for /data_ssd/NMW-TexasTech/reference_imgs/UMa-04-Q2b1x1_2026-02-22_00-33-00_20.00sec_-14.90C_LIGHT_0278.fits
Running  util/solve_plate_with_UCAC5 --no_photometric_catalog --iterations 2  /data_ssd/NMW-TexasTech/reference_imgs/UMa-04-Q2b1x1_2026-02-22_00-34-07_20.00sec_-14.90C_LIGHT_0279.fits &> /tmp/tmp.TS57WYhDa4
Parallel run for /data_ssd/NMW-TexasTech/reference_imgs/UMa-04-Q2b1x1_2026-02-22_00-34-07_20.00sec_-14.90C_LIGHT_0279.fits
Running  util/solve_plate_with_UCAC5 --no_photometric_catalog --iterations 2  /data_ssd/NMW-TexasTech/workdir//img_2026-08-06_CI_UMa-04-Q2b1x1_004716_TTUQ2b1x1_1093296_9mG5zxor/fd_UMa-04-Q2b1x1_2026-08-05_23-52-36_20.00sec_-0.00C_LIGHT_0164.fits &> /tmp/tmp.vqWWajLErj
Parallel run for /data_ssd/NMW-TexasTech/workdir//img_2026-08-06_CI_UMa-04-Q2b1x1_004716_TTUQ2b1x1_1093296_9mG5zxor/fd_UMa-04-Q2b1x1_2026-08-05_23-52-36_20.00sec_-0.00C_LIGHT_0164.fits
Running  util/solve_plate_with_UCAC5 --no_photometric_catalog --iterations 2  /data_ssd/NMW-TexasTech/workdir//img_2026-08-06_CI_UMa-04-Q2b1x1_004716_TTUQ2b1x1_1093296_9mG5zxor/fd_UMa-04-Q2b1x1_2026-08-05_23-53-40_20.00sec_-0.00C_LIGHT_0165.fits &> /tmp/tmp.uCMn3WnmpK
Parallel run for /data_ssd/NMW-TexasTech/workdir//img_2026-08-06_CI_UMa-04-Q2b1x1_004716_TTUQ2b1x1_1093296_9mG5zxor/fd_UMa-04-Q2b1x1_2026-08-05_23-53-40_20.00sec_-0.00C_LIGHT_0165.fits
Calibrating the magnitude scale
Found non-empty wcs_UMa-04-Q2b1x1_2026-02-22_00-33-00_20.00sec_-14.90C_LIGHT_0278.fits
____ Start of magnitude calibration ____
PHOTOMETRIC_CALIBRATION=TYCHO2_V
Calibrating the magnitude scale with Tycho-2 stars
util/transients/transient_factory_test31.sh is checking for the presence of non-empty wcs_UMa-04-Q2b1x1_2026-02-22_00-33-00_20.00sec_-14.90C_LIGHT_0278.fits and wcs_UMa-04-Q2b1x1_2026-02-22_00-33-00_20.00sec_-14.90C_LIGHT_0278.fits.wcscat 
wait (drain background util/solve_plate_with_UCAC5 jobs before Tycho-2 calibration -- avoids wcs_.fits write race)
Tycho-2 catalog is found at lib/catalogs/tycho2
Tycho-2 catalog and the derived bright star exclusion list are ready
Checking for the presence of non-empty wcs_UMa-04-Q2b1x1_2026-02-22_00-33-00_20.00sec_-14.90C_LIGHT_0278.fits and wcs_UMa-04-Q2b1x1_2026-02-22_00-33-00_20.00sec_-14.90C_LIGHT_0278.fits.wcscat 
Found non-empty wcs_UMa-04-Q2b1x1_2026-02-22_00-33-00_20.00sec_-14.90C_LIGHT_0278.fits and wcs_UMa-04-Q2b1x1_2026-02-22_00-33-00_20.00sec_-14.90C_LIGHT_0278.fits.wcscat
The reference image (wcs_UMa-04-Q2b1x1_2026-02-22_00-33-00_20.00sec_-14.90C_LIGHT_0278.fits) and catalog (wcs_UMa-04-Q2b1x1_2026-02-22_00-33-00_20.00sec_-14.90C_LIGHT_0278.fits.wcscat) found
'wcs_UMa-04-Q2b1x1_2026-02-22_00-33-00_20.00sec_-14.90C_LIGHT_0278.fits.wcscat' -> 'wcsmag.cat'
Read 7332 stars from the SExtractor catalog wcsmag.cat
Detected star coordinate range: RA 159.9729 to 198.4317 deg, Dec +55.2640 to +67.4533 deg
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.00
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.01
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.02
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.03
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.04
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.05
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.06
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.07
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.08
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.09
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.10
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.11
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.12
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.13
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.14
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.15
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.16
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.17
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.18
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.19
Tycho-2 catalog search boundaries: RA 159.9729 to 198.4317 deg, Dec 55.2640 to 67.4533 deg
Loaded 6574 Tycho-2 stars within the image boundaries (VT and BT non-zero).
Relation between the catalog and instrumental magnitudes is written to calib.txt
Stars used for magnitude calibration (good matches): 3976 out of 4190 total matches.
Matched with Tycho-2 4190 out of 7332 detected stars.
The calibration function type and coefficients are written to calib.txt_param
util/calibrate_magnitude_scale 0.000000 1.000000 22.890400
a=0.000000 b=1.000000 c=22.890400
From vast_summary.log: estimated ref. image limiting mag.:  -7.49
Updating vast_summary.log: Estimated ref. image limiting mag.:  15.40

Updated vast_limiting_magnitude.log with calibrated magnitudes
Working...
Please, PLEASE, be patient!!!
All lightcurves processed!  =)
Estimated ref. image limiting mag.:  15.40

Lightcurve magnitude calibration plot:


Preparing per-reference-image forced-photometry calibration (method=tycho2 band=V)
Read 7332 stars from the SExtractor catalog wcsmag.cat
Detected star coordinate range: RA 159.9729 to 198.4317 deg, Dec +55.2640 to +67.4533 deg
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.00
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.01
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.02
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.03
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.04
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.05
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.06
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.07
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.08
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.09
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.10
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.11
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.12
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.13
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.14
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.15
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.16
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.17
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.18
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.19
Tycho-2 catalog search boundaries: RA 159.9729 to 198.4317 deg, Dec 55.2640 to 67.4533 deg
Loaded 6574 Tycho-2 stars within the image boundaries (VT and BT non-zero).
Relation between the catalog and instrumental magnitudes is written to calib.txt
Stars used for magnitude calibration (good matches): 3976 out of 4190 total matches.
Matched with Tycho-2 4190 out of 7332 detected stars.
util/calibrate_single_image_with_tycho2.sh: calibrated wcs_UMa-04-Q2b1x1_2026-02-22_00-33-00_20.00sec_-14.90C_LIGHT_0278.fits via Tycho-2

Single-image forced-photometry magnitude calibration plot for wcs_UMa-04-Q2b1x1_2026-02-22_00-33-00_20.00sec_-14.90C_LIGHT_0278.fits:


Forced-photometry filter: reusing the VaST-run aperture from image00001.cat.aperture for wcs_UMa-04-Q2b1x1_2026-02-22_00-33-00_20.00sec_-14.90C_LIGHT_0278.fits
Forced-photometry filter: calibrated wcs_UMa-04-Q2b1x1_2026-02-22_00-33-00_20.00sec_-14.90C_LIGHT_0278.fits -> calib.txt_param_ref_wcs_UMa-04-Q2b1x1_2026-02-22_00-33-00_20.00sec_-14.90C_LIGHT_0278.fits (aperture=6.3)
Read 7282 stars from the SExtractor catalog wcsmag.cat
Detected star coordinate range: RA 159.9723 to 198.4317 deg, Dec +55.3313 to +67.4947 deg
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.00
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.01
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.02
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.03
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.04
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.05
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.06
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.07
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.08
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.09
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.10
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.11
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.12
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.13
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.14
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.15
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.16
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.17
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.18
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.19
Tycho-2 catalog search boundaries: RA 159.9723 to 198.4317 deg, Dec 55.3313 to 67.4947 deg
Loaded 6542 Tycho-2 stars within the image boundaries (VT and BT non-zero).
Relation between the catalog and instrumental magnitudes is written to calib.txt
Stars used for magnitude calibration (good matches): 3979 out of 4176 total matches.
Matched with Tycho-2 4176 out of 7282 detected stars.
util/calibrate_single_image_with_tycho2.sh: calibrated wcs_UMa-04-Q2b1x1_2026-02-22_00-34-07_20.00sec_-14.90C_LIGHT_0279.fits via Tycho-2

Single-image forced-photometry magnitude calibration plot for wcs_UMa-04-Q2b1x1_2026-02-22_00-34-07_20.00sec_-14.90C_LIGHT_0279.fits:


Forced-photometry filter: reusing the VaST-run aperture from image00002.cat.aperture for wcs_UMa-04-Q2b1x1_2026-02-22_00-34-07_20.00sec_-14.90C_LIGHT_0279.fits
Forced-photometry filter: calibrated wcs_UMa-04-Q2b1x1_2026-02-22_00-34-07_20.00sec_-14.90C_LIGHT_0279.fits -> calib.txt_param_ref_wcs_UMa-04-Q2b1x1_2026-02-22_00-34-07_20.00sec_-14.90C_LIGHT_0279.fits (aperture=6.4)
____ End of magnitude calibration ____
Applying consolidated magnitude filters...
Preparing the exclusion lists for this field
Done with filtering
Found 0 candidate transients before the final filtering.  (Hard limit: 10000)
Median FWHM seeing for isolated stars:
 2.2 pix  UMa-04-Q2b1x1_2026-02-22_00-33-00_20.00sec_-14.90C_LIGHT_0278.fits
 2.2 pix  UMa-04-Q2b1x1_2026-02-22_00-34-07_20.00sec_-14.90C_LIGHT_0279.fits
 2.3 pix  fd_UMa-04-Q2b1x1_2026-08-05_23-52-36_20.00sec_-0.00C_LIGHT_0164.fits
 2.3 pix  fd_UMa-04-Q2b1x1_2026-08-05_23-53-40_20.00sec_-0.00C_LIGHT_0165.fits
Limiting magnitude estimates:
 15.4 mag.  UMa-04-Q2b1x1_2026-02-22_00-33-00_20.00sec_-14.90C_LIGHT_0278.fits
 15.4 mag.  UMa-04-Q2b1x1_2026-02-22_00-34-07_20.00sec_-14.90C_LIGHT_0279.fits
 12.9 mag.  fd_UMa-04-Q2b1x1_2026-08-05_23-52-36_20.00sec_-0.00C_LIGHT_0164.fits
 12.9 mag.  fd_UMa-04-Q2b1x1_2026-08-05_23-53-40_20.00sec_-0.00C_LIGHT_0165.fits
All-image limiting magnitude estimate:  12.9 (SNR )  10.5 (80% of stars)  with default.sex.telephoto_lens_onlybrightstars_v1
The first estimate is the magnitude of a star detected with a signal-to-noise ratio of  following Karpov (2025, Acta Polytechnica, 65, 50). 
This value should be representative of the faintest stars clearly visible in the image. 
The brighter of the limiting magnitude estimates for the two second-epoch images is reported here.
The second estimate is the 80th percentile of the magnitude distribution of stars detected on all four images.
This value is representative of the faintest object that may enter the candidate transients list.
The hard cut-off for the candidate transients is 15.5 mag.
Waiting for UCAC5 plate solver
wait
############ /tmp/tmp.M8jltgMKjd (6) ############
Parsing command line arguments...
WARNING from replace_file_with_symlink_if_filename_contains_white_spaces() the input file /data_ssd/NMW-TexasTech/reference_imgs/UMa-04-Q2b1x1_2026-02-22_00-33-00_20.00sec_-14.90C_LIGHT_0278.fits is already a symlink and we do not allow symlinks on symlinks
The guess is based on the existing WCS header.
Trying to blindly solve the plate (local solve-field or remote server)...
/data_ssd/NMW-TexasTech/workdir/vast_2026-08-06_CI_UMa-04-Q2b1x1_004716_TTUQ2b1x1_1093296_9mG5zxor/util/wcs_image_calibration.sh /data_ssd/NMW-TexasTech/reference_imgs/UMa-04-Q2b1x1_2026-02-22_00-33-00_20.00sec_-14.90C_LIGHT_0278.fits 573.0
Entering WCS image calibration mode.
ORIGINAL_FITSFILE=/data_ssd/NMW-TexasTech/reference_imgs/UMa-04-Q2b1x1_2026-02-22_00-33-00_20.00sec_-14.90C_LIGHT_0278.fits
FITSFILE before on_the_fly=/data_ssd/NMW-TexasTech/reference_imgs/UMa-04-Q2b1x1_2026-02-22_00-33-00_20.00sec_-14.90C_LIGHT_0278.fits
WARNING from replace_file_with_symlink_if_filename_contains_white_spaces() the input file /data_ssd/NMW-TexasTech/reference_imgs/UMa-04-Q2b1x1_2026-02-22_00-33-00_20.00sec_-14.90C_LIGHT_0278.fits is already a symlink and we do not allow symlinks on symlinks
FITSFILE after on_the_fly=/data_ssd/NMW-TexasTech/reference_imgs/UMa-04-Q2b1x1_2026-02-22_00-33-00_20.00sec_-14.90C_LIGHT_0278.fits
verification OK: /data_ssd/NMW-TexasTech/reference_imgs/UMa-04-Q2b1x1_2026-02-22_00-33-00_20.00sec_-14.90C_LIGHT_0278.fits
It's a known telescope with plate solutions that are supposed to be good.
The input image /data_ssd/NMW-TexasTech/reference_imgs/UMa-04-Q2b1x1_2026-02-22_00-33-00_20.00sec_-14.90C_LIGHT_0278.fits has a WCS header - will blindly trust it is good...
'/data_ssd/NMW-TexasTech/reference_imgs/UMa-04-Q2b1x1_2026-02-22_00-33-00_20.00sec_-14.90C_LIGHT_0278.fits' -> 'wcs_UMa-04-Q2b1x1_2026-02-22_00-33-00_20.00sec_-14.90C_LIGHT_0278.fits'
This WCS solution (astrometrynet) will be kept as is, not refit by util/solve_plate_with_UCAC5
FITSFILE after on_the_fly=/data_ssd/NMW-TexasTech/reference_imgs/UMa-04-Q2b1x1_2026-02-22_00-33-00_20.00sec_-14.90C_LIGHT_0278.fits
WCS_IMAGE_NAME=wcs_UMa-04-Q2b1x1_2026-02-22_00-33-00_20.00sec_-14.90C_LIGHT_0278.fits
WCS-calibrated image found: wcs_UMa-04-Q2b1x1_2026-02-22_00-33-00_20.00sec_-14.90C_LIGHT_0278.fits
Checking if the catalog wcs_UMa-04-Q2b1x1_2026-02-22_00-33-00_20.00sec_-14.90C_LIGHT_0278.fits.wcscat corresponding to the image wcs_UMa-04-Q2b1x1_2026-02-22_00-33-00_20.00sec_-14.90C_LIGHT_0278.fits alredy exist and is non-empty...
Catalog wcs_UMa-04-Q2b1x1_2026-02-22_00-33-00_20.00sec_-14.90C_LIGHT_0278.fits.wcscat corresponding to the image wcs_UMa-04-Q2b1x1_2026-02-22_00-33-00_20.00sec_-14.90C_LIGHT_0278.fits found.
The catalog is in the new format, as expected.
The plate-solved (WCS-calibrated) image is saved to wcs_UMa-04-Q2b1x1_2026-02-22_00-33-00_20.00sec_-14.90C_LIGHT_0278.fits
util/solve_plate_with_UCAC5 is preparing to read a catalog corresponding to the image /data_ssd/NMW-TexasTech/reference_imgs/UMa-04-Q2b1x1_2026-02-22_00-33-00_20.00sec_-14.90C_LIGHT_0278.fits
WCS catalog name: wcs_UMa-04-Q2b1x1_2026-02-22_00-33-00_20.00sec_-14.90C_LIGHT_0278.fits.wcscat 
Excluding image region:    -1.0    -1.0     1.0     1.0  (defined in bad_region.lst)
Excluding image region:  7500.0     0.0  9576.0  6388.0  (defined in bad_region.lst)
Excluding image region:  1122.0  1550.0  1124.0  1552.0  (defined in bad_region.lst)
Excluding image region:  1637.0  2824.0  1639.0  2826.0  (defined in bad_region.lst)
Excluding image region:  1831.0  2839.0  1833.0  2841.0  (defined in bad_region.lst)
Excluding image region:  1905.0  4570.0  1907.0  4572.0  (defined in bad_region.lst)
Excluding image region:  2012.0  4693.0  2014.0  4695.0  (defined in bad_region.lst)
Excluding image region:  2397.0  4241.0  2399.0  4243.0  (defined in bad_region.lst)
Excluding image region:  2679.0  2807.0  2681.0  2809.0  (defined in bad_region.lst)
Excluding more image regions!.. (will not print them all)
Excluded a total of 31 image regions  (defined in bad_region.lst).
SExtractor catalog parsing summary: zero_flux=0, no_flux_err=0, no_mag=0, no_mag_err=0, low_SNR=0, blended=506, bad_region=1672, passed=7332
Got 7332 stars (including 5274 good ones) from the SExtractor catalog wcs_UMa-04-Q2b1x1_2026-02-22_00-33-00_20.00sec_-14.90C_LIGHT_0278.fits.wcscat 
util/solve_plate_with_UCAC5 got 7332 stars from the SExtractor catalog
Updated FoV from the plate-solved image: 941.9'
Seting catalog search parameters based on the expected field of view 941.9 arcmin
UCAC5 catalog search parameters:
                    catalog_search_parameters->search_radius_deg= 0.013082 (47.1 arcsec)
                    catalog_search_parameters->brightest_mag= 1.00
                    catalog_search_parameters->faintest_mag= 13.50
                    catalog_search_parameters->search_radius_second_step_deg 0.010466 (37.7 arcsec)

ITERATION 01 -- talking to VizieR, this might be slow!
UCAC5 search strategy: trying local copy first
Found a local copy of UCAC5
UCAC5 local query limit 5000: matching up to 5000 detected stars, deepening the UCAC5 window to mag 15.50
Reading UCAC5 zone files...
Searching UCAC5 zones 726 to 789 (Dec 55.3 to 67.5)
Done reading UCAC5 zone files...
Matched 4899 stars with the local copy of UCAC5.
The local UCAC5 search seems to be a success
Correcting the measured astrometric positions...
Accuracy estimation diagnostic: 4895 matched stars entering correct_measured_positions(), 4895 with non-zero local correction accuracy
Estimated accuracy of the plate solution: 0.33" 
Removing outliers...
Correcting the measured astrometric positions...
Accuracy estimation diagnostic: 4895 matched stars entering correct_measured_positions(), 6037 with non-zero local correction accuracy
Estimated accuracy of the plate solution: 0.32" 

ITERATION 02 -- talking to VizieR, this might be slow!
UCAC5 search strategy: trying local copy first
Found a local copy of UCAC5
UCAC5 local query limit 5000: matching up to 5000 detected stars, deepening the UCAC5 window to mag 15.50
Reading UCAC5 zone files...
Searching UCAC5 zones 726 to 789 (Dec 55.3 to 67.5)
Done reading UCAC5 zone files...
Matched 4899 stars with the local copy of UCAC5.
The local UCAC5 search seems to be a success
Accuracy estimation diagnostic: 4895 matched stars entering correct_measured_positions(), 6037 with non-zero local correction accuracy
Estimated accuracy of the plate solution: 0.34" 
Accuracy estimation diagnostic: 4895 matched stars entering correct_measured_positions(), 6037 with non-zero local correction accuracy
Estimated accuracy of the plate solution: 0.34" 
Excluding outliers - 4895 stars left (next iteration limit 5384)
Stop iterations.


 The field is successfully solved and matched with the astrometric catalog! :)

SIP_REFIT: util/identify.sh trusts the WCS of wcs_UMa-04-Q2b1x1_2026-02-22_00-33-00_20.00sec_-14.90C_LIGHT_0278.fits (astrometrynet) - keeping it, no refit (set VAST_FORCE_SIP_REFIT=1 to refit anyway)
WCS_QUALITY_DIAG: file=UMa-04-Q2b1x1_2026-02-22_00-33-00_20.00sec_-14.90C_LIGHT_0278.fits N_match=4895 sigma_overall_arcsec=0.383 sigma_q1_arcsec=0.450 sigma_q2_arcsec=0.405 sigma_q3_arcsec=0.341 sigma_q4_arcsec=0.345 n_q1=1452 n_q2=848 n_q3=1641 n_q4=954 worst_quadrant_to_overall_ratio=1.173
The image catalog is written to wcs_UMa-04-Q2b1x1_2026-02-22_00-33-00_20.00sec_-14.90C_LIGHT_0278.fits.wcscat.ucac5
The DS9 region file with the matched stars is written to wcs_UMa-04-Q2b1x1_2026-02-22_00-33-00_20.00sec_-14.90C_LIGHT_0278.fits.wcscat.ds9.reg
You may view it with the command:
 ds9 /data_ssd/NMW-TexasTech/reference_imgs/UMa-04-Q2b1x1_2026-02-22_00-33-00_20.00sec_-14.90C_LIGHT_0278.fits -region wcs_UMa-04-Q2b1x1_2026-02-22_00-33-00_20.00sec_-14.90C_LIGHT_0278.fits.wcscat.ds9.reg
The astrometric residuals vector field is written to wcs_UMa-04-Q2b1x1_2026-02-22_00-33-00_20.00sec_-14.90C_LIGHT_0278.fits.wcscat.astrometric_residuals
Option '-n' not using photometric catalogs, just stick with astrometry
opt '-i': 2 is the maximum number of iterations
############ /tmp/tmp.TS57WYhDa4 (6) ############
Parsing command line arguments...
WARNING from replace_file_with_symlink_if_filename_contains_white_spaces() the input file /data_ssd/NMW-TexasTech/reference_imgs/UMa-04-Q2b1x1_2026-02-22_00-34-07_20.00sec_-14.90C_LIGHT_0279.fits is already a symlink and we do not allow symlinks on symlinks
The guess is based on the existing WCS header.
Trying to blindly solve the plate (local solve-field or remote server)...
/data_ssd/NMW-TexasTech/workdir/vast_2026-08-06_CI_UMa-04-Q2b1x1_004716_TTUQ2b1x1_1093296_9mG5zxor/util/wcs_image_calibration.sh /data_ssd/NMW-TexasTech/reference_imgs/UMa-04-Q2b1x1_2026-02-22_00-34-07_20.00sec_-14.90C_LIGHT_0279.fits 573.0
Entering WCS image calibration mode.
ORIGINAL_FITSFILE=/data_ssd/NMW-TexasTech/reference_imgs/UMa-04-Q2b1x1_2026-02-22_00-34-07_20.00sec_-14.90C_LIGHT_0279.fits
FITSFILE before on_the_fly=/data_ssd/NMW-TexasTech/reference_imgs/UMa-04-Q2b1x1_2026-02-22_00-34-07_20.00sec_-14.90C_LIGHT_0279.fits
WARNING from replace_file_with_symlink_if_filename_contains_white_spaces() the input file /data_ssd/NMW-TexasTech/reference_imgs/UMa-04-Q2b1x1_2026-02-22_00-34-07_20.00sec_-14.90C_LIGHT_0279.fits is already a symlink and we do not allow symlinks on symlinks
FITSFILE after on_the_fly=/data_ssd/NMW-TexasTech/reference_imgs/UMa-04-Q2b1x1_2026-02-22_00-34-07_20.00sec_-14.90C_LIGHT_0279.fits
verification OK: /data_ssd/NMW-TexasTech/reference_imgs/UMa-04-Q2b1x1_2026-02-22_00-34-07_20.00sec_-14.90C_LIGHT_0279.fits
It's a known telescope with plate solutions that are supposed to be good.
The input image /data_ssd/NMW-TexasTech/reference_imgs/UMa-04-Q2b1x1_2026-02-22_00-34-07_20.00sec_-14.90C_LIGHT_0279.fits has a WCS header - will blindly trust it is good...
'/data_ssd/NMW-TexasTech/reference_imgs/UMa-04-Q2b1x1_2026-02-22_00-34-07_20.00sec_-14.90C_LIGHT_0279.fits' -> 'wcs_UMa-04-Q2b1x1_2026-02-22_00-34-07_20.00sec_-14.90C_LIGHT_0279.fits'
This WCS solution (astrometrynet) will be kept as is, not refit by util/solve_plate_with_UCAC5
FITSFILE after on_the_fly=/data_ssd/NMW-TexasTech/reference_imgs/UMa-04-Q2b1x1_2026-02-22_00-34-07_20.00sec_-14.90C_LIGHT_0279.fits
WCS_IMAGE_NAME=wcs_UMa-04-Q2b1x1_2026-02-22_00-34-07_20.00sec_-14.90C_LIGHT_0279.fits
WCS-calibrated image found: wcs_UMa-04-Q2b1x1_2026-02-22_00-34-07_20.00sec_-14.90C_LIGHT_0279.fits
Checking if the catalog wcs_UMa-04-Q2b1x1_2026-02-22_00-34-07_20.00sec_-14.90C_LIGHT_0279.fits.wcscat corresponding to the image wcs_UMa-04-Q2b1x1_2026-02-22_00-34-07_20.00sec_-14.90C_LIGHT_0279.fits alredy exist and is non-empty...
Catalog wcs_UMa-04-Q2b1x1_2026-02-22_00-34-07_20.00sec_-14.90C_LIGHT_0279.fits.wcscat corresponding to the image wcs_UMa-04-Q2b1x1_2026-02-22_00-34-07_20.00sec_-14.90C_LIGHT_0279.fits found.
The catalog is in the new format, as expected.
The plate-solved (WCS-calibrated) image is saved to wcs_UMa-04-Q2b1x1_2026-02-22_00-34-07_20.00sec_-14.90C_LIGHT_0279.fits
util/solve_plate_with_UCAC5 is preparing to read a catalog corresponding to the image /data_ssd/NMW-TexasTech/reference_imgs/UMa-04-Q2b1x1_2026-02-22_00-34-07_20.00sec_-14.90C_LIGHT_0279.fits
WCS catalog name: wcs_UMa-04-Q2b1x1_2026-02-22_00-34-07_20.00sec_-14.90C_LIGHT_0279.fits.wcscat 
Excluding image region:    -1.0    -1.0     1.0     1.0  (defined in bad_region.lst)
Excluding image region:  7500.0     0.0  9576.0  6388.0  (defined in bad_region.lst)
Excluding image region:  1122.0  1550.0  1124.0  1552.0  (defined in bad_region.lst)
Excluding image region:  1637.0  2824.0  1639.0  2826.0  (defined in bad_region.lst)
Excluding image region:  1831.0  2839.0  1833.0  2841.0  (defined in bad_region.lst)
Excluding image region:  1905.0  4570.0  1907.0  4572.0  (defined in bad_region.lst)
Excluding image region:  2012.0  4693.0  2014.0  4695.0  (defined in bad_region.lst)
Excluding image region:  2397.0  4241.0  2399.0  4243.0  (defined in bad_region.lst)
Excluding image region:  2679.0  2807.0  2681.0  2809.0  (defined in bad_region.lst)
Excluding more image regions!.. (will not print them all)
Excluded a total of 31 image regions  (defined in bad_region.lst).
SExtractor catalog parsing summary: zero_flux=0, no_flux_err=0, no_mag=0, no_mag_err=0, low_SNR=0, blended=494, bad_region=1659, passed=7282
Got 7282 stars (including 5242 good ones) from the SExtractor catalog wcs_UMa-04-Q2b1x1_2026-02-22_00-34-07_20.00sec_-14.90C_LIGHT_0279.fits.wcscat 
util/solve_plate_with_UCAC5 got 7282 stars from the SExtractor catalog
Updated FoV from the plate-solved image: 941.8'
Seting catalog search parameters based on the expected field of view 941.8 arcmin
UCAC5 catalog search parameters:
                    catalog_search_parameters->search_radius_deg= 0.013081 (47.1 arcsec)
                    catalog_search_parameters->brightest_mag= 1.00
                    catalog_search_parameters->faintest_mag= 13.50
                    catalog_search_parameters->search_radius_second_step_deg 0.010464 (37.7 arcsec)

ITERATION 01 -- talking to VizieR, this might be slow!
UCAC5 search strategy: trying local copy first
Found a local copy of UCAC5
UCAC5 local query limit 5000: matching up to 5000 detected stars, deepening the UCAC5 window to mag 15.50
Reading UCAC5 zone files...
Searching UCAC5 zones 726 to 789 (Dec 55.3 to 67.5)
Done reading UCAC5 zone files...
Matched 4903 stars with the local copy of UCAC5.
The local UCAC5 search seems to be a success
Correcting the measured astrometric positions...
Accuracy estimation diagnostic: 4898 matched stars entering correct_measured_positions(), 4898 with non-zero local correction accuracy
Estimated accuracy of the plate solution: 0.36" 
Removing outliers...
Correcting the measured astrometric positions...
Accuracy estimation diagnostic: 4898 matched stars entering correct_measured_positions(), 5987 with non-zero local correction accuracy
Estimated accuracy of the plate solution: 0.36" 

ITERATION 02 -- talking to VizieR, this might be slow!
UCAC5 search strategy: trying local copy first
Found a local copy of UCAC5
UCAC5 local query limit 5000: matching up to 5000 detected stars, deepening the UCAC5 window to mag 15.50
Reading UCAC5 zone files...
Searching UCAC5 zones 726 to 789 (Dec 55.3 to 67.5)
Done reading UCAC5 zone files...
Matched 4903 stars with the local copy of UCAC5.
The local UCAC5 search seems to be a success
Accuracy estimation diagnostic: 4898 matched stars entering correct_measured_positions(), 5987 with non-zero local correction accuracy
Estimated accuracy of the plate solution: 0.37" 
Accuracy estimation diagnostic: 4898 matched stars entering correct_measured_positions(), 5987 with non-zero local correction accuracy
Estimated accuracy of the plate solution: 0.37" 
Excluding outliers - 4898 stars left (next iteration limit 5387)
Stop iterations.


 The field is successfully solved and matched with the astrometric catalog! :)

SIP_REFIT: util/identify.sh trusts the WCS of wcs_UMa-04-Q2b1x1_2026-02-22_00-34-07_20.00sec_-14.90C_LIGHT_0279.fits (astrometrynet) - keeping it, no refit (set VAST_FORCE_SIP_REFIT=1 to refit anyway)
WCS_QUALITY_DIAG: file=UMa-04-Q2b1x1_2026-02-22_00-34-07_20.00sec_-14.90C_LIGHT_0279.fits N_match=4898 sigma_overall_arcsec=0.417 sigma_q1_arcsec=0.480 sigma_q2_arcsec=0.441 sigma_q3_arcsec=0.374 sigma_q4_arcsec=0.397 n_q1=1451 n_q2=838 n_q3=1650 n_q4=959 worst_quadrant_to_overall_ratio=1.152
The image catalog is written to wcs_UMa-04-Q2b1x1_2026-02-22_00-34-07_20.00sec_-14.90C_LIGHT_0279.fits.wcscat.ucac5
The DS9 region file with the matched stars is written to wcs_UMa-04-Q2b1x1_2026-02-22_00-34-07_20.00sec_-14.90C_LIGHT_0279.fits.wcscat.ds9.reg
You may view it with the command:
 ds9 /data_ssd/NMW-TexasTech/reference_imgs/UMa-04-Q2b1x1_2026-02-22_00-34-07_20.00sec_-14.90C_LIGHT_0279.fits -region wcs_UMa-04-Q2b1x1_2026-02-22_00-34-07_20.00sec_-14.90C_LIGHT_0279.fits.wcscat.ds9.reg
The astrometric residuals vector field is written to wcs_UMa-04-Q2b1x1_2026-02-22_00-34-07_20.00sec_-14.90C_LIGHT_0279.fits.wcscat.astrometric_residuals
Option '-n' not using photometric catalogs, just stick with astrometry
opt '-i': 2 is the maximum number of iterations
############ /tmp/tmp.vqWWajLErj (6) ############
Parsing command line arguments...
The minor axis of the CCD chip should be 24.0 mm based on the derived pixel size of 3.8 um
Internal estimated FoV 605.3'
The guess is based on the FOCALLEN keyword.
Trying to blindly solve the plate (local solve-field or remote server)...
/data_ssd/NMW-TexasTech/workdir/vast_2026-08-06_CI_UMa-04-Q2b1x1_004716_TTUQ2b1x1_1093296_9mG5zxor/util/wcs_image_calibration.sh /data_ssd/NMW-TexasTech/workdir//img_2026-08-06_CI_UMa-04-Q2b1x1_004716_TTUQ2b1x1_1093296_9mG5zxor/fd_UMa-04-Q2b1x1_2026-08-05_23-52-36_20.00sec_-0.00C_LIGHT_0164.fits 605.0
Entering WCS image calibration mode.
ORIGINAL_FITSFILE=/data_ssd/NMW-TexasTech/workdir//img_2026-08-06_CI_UMa-04-Q2b1x1_004716_TTUQ2b1x1_1093296_9mG5zxor/fd_UMa-04-Q2b1x1_2026-08-05_23-52-36_20.00sec_-0.00C_LIGHT_0164.fits
FITSFILE before on_the_fly=/data_ssd/NMW-TexasTech/workdir//img_2026-08-06_CI_UMa-04-Q2b1x1_004716_TTUQ2b1x1_1093296_9mG5zxor/fd_UMa-04-Q2b1x1_2026-08-05_23-52-36_20.00sec_-0.00C_LIGHT_0164.fits
FITSFILE after on_the_fly=/data_ssd/NMW-TexasTech/workdir//img_2026-08-06_CI_UMa-04-Q2b1x1_004716_TTUQ2b1x1_1093296_9mG5zxor/fd_UMa-04-Q2b1x1_2026-08-05_23-52-36_20.00sec_-0.00C_LIGHT_0164.fits
verification OK: /data_ssd/NMW-TexasTech/workdir//img_2026-08-06_CI_UMa-04-Q2b1x1_004716_TTUQ2b1x1_1093296_9mG5zxor/fd_UMa-04-Q2b1x1_2026-08-05_23-52-36_20.00sec_-0.00C_LIGHT_0164.fits
It's not one of the telescopes that are know to produce images with good WCS solutions - will try to re-solve!
FITSFILE after on_the_fly=/data_ssd/NMW-TexasTech/workdir//img_2026-08-06_CI_UMa-04-Q2b1x1_004716_TTUQ2b1x1_1093296_9mG5zxor/fd_UMa-04-Q2b1x1_2026-08-05_23-52-36_20.00sec_-0.00C_LIGHT_0164.fits
WCS_IMAGE_NAME=wcs_fd_UMa-04-Q2b1x1_2026-08-05_23-52-36_20.00sec_-0.00C_LIGHT_0164.fits
WCS-calibrated image found: wcs_fd_UMa-04-Q2b1x1_2026-08-05_23-52-36_20.00sec_-0.00C_LIGHT_0164.fits
Checking if the catalog wcs_fd_UMa-04-Q2b1x1_2026-08-05_23-52-36_20.00sec_-0.00C_LIGHT_0164.fits.wcscat corresponding to the image wcs_fd_UMa-04-Q2b1x1_2026-08-05_23-52-36_20.00sec_-0.00C_LIGHT_0164.fits alredy exist and is non-empty...
Catalog wcs_fd_UMa-04-Q2b1x1_2026-08-05_23-52-36_20.00sec_-0.00C_LIGHT_0164.fits.wcscat corresponding to the image wcs_fd_UMa-04-Q2b1x1_2026-08-05_23-52-36_20.00sec_-0.00C_LIGHT_0164.fits found.
The catalog is in the new format, as expected.
The plate-solved (WCS-calibrated) image is saved to wcs_fd_UMa-04-Q2b1x1_2026-08-05_23-52-36_20.00sec_-0.00C_LIGHT_0164.fits
util/solve_plate_with_UCAC5 is preparing to read a catalog corresponding to the image /data_ssd/NMW-TexasTech/workdir//img_2026-08-06_CI_UMa-04-Q2b1x1_004716_TTUQ2b1x1_1093296_9mG5zxor/fd_UMa-04-Q2b1x1_2026-08-05_23-52-36_20.00sec_-0.00C_LIGHT_0164.fits
WCS catalog name: wcs_fd_UMa-04-Q2b1x1_2026-08-05_23-52-36_20.00sec_-0.00C_LIGHT_0164.fits.wcscat 
Excluding image region:    -1.0    -1.0     1.0     1.0  (defined in bad_region.lst)
Excluding image region:  7500.0     0.0  9576.0  6388.0  (defined in bad_region.lst)
Excluding image region:  1122.0  1550.0  1124.0  1552.0  (defined in bad_region.lst)
Excluding image region:  1637.0  2824.0  1639.0  2826.0  (defined in bad_region.lst)
Excluding image region:  1831.0  2839.0  1833.0  2841.0  (defined in bad_region.lst)
Excluding image region:  1905.0  4570.0  1907.0  4572.0  (defined in bad_region.lst)
Excluding image region:  2012.0  4693.0  2014.0  4695.0  (defined in bad_region.lst)
Excluding image region:  2397.0  4241.0  2399.0  4243.0  (defined in bad_region.lst)
Excluding image region:  2679.0  2807.0  2681.0  2809.0  (defined in bad_region.lst)
Excluding more image regions!.. (will not print them all)
Excluded a total of 31 image regions  (defined in bad_region.lst).
SExtractor catalog parsing summary: zero_flux=4, no_flux_err=0, no_mag=0, no_mag_err=0, low_SNR=0, blended=66, bad_region=183, passed=1363
Got 1363 stars (including 1116 good ones) from the SExtractor catalog wcs_fd_UMa-04-Q2b1x1_2026-08-05_23-52-36_20.00sec_-0.00C_LIGHT_0164.fits.wcscat 
util/solve_plate_with_UCAC5 got 1363 stars from the SExtractor catalog
Updated FoV from the plate-solved image: 938.0'
Seting catalog search parameters based on the expected field of view 938.0 arcmin
UCAC5 catalog search parameters:
                    catalog_search_parameters->search_radius_deg= 0.013028 (46.9 arcsec)
                    catalog_search_parameters->brightest_mag= 1.00
                    catalog_search_parameters->faintest_mag= 13.50
                    catalog_search_parameters->search_radius_second_step_deg 0.010422 (37.5 arcsec)

ITERATION 01 -- talking to VizieR, this might be slow!
UCAC5 search strategy: trying local copy first
Found a local copy of UCAC5
UCAC5 local query limit 5000: matching up to 5000 detected stars, deepening the UCAC5 window to mag 15.50
Reading UCAC5 zone files...
Searching UCAC5 zones 730 to 788 (Dec 56.1 to 67.3)
Done reading UCAC5 zone files...
Matched 1088 stars with the local copy of UCAC5.
The local UCAC5 search seems to be a success
Correcting the measured astrometric positions...
Accuracy estimation diagnostic: 1084 matched stars entering correct_measured_positions(), 1073 with non-zero local correction accuracy
Estimated accuracy of the plate solution: 0.35" 
Removing outliers...
Correcting the measured astrometric positions...
Accuracy estimation diagnostic: 1084 matched stars entering correct_measured_positions(), 1181 with non-zero local correction accuracy
Estimated accuracy of the plate solution: 0.35" 

ITERATION 02 -- talking to VizieR, this might be slow!
UCAC5 search strategy: trying local copy first
Found a local copy of UCAC5
UCAC5 local query limit 5000: matching up to 5000 detected stars, deepening the UCAC5 window to mag 15.50
Reading UCAC5 zone files...
Searching UCAC5 zones 730 to 788 (Dec 56.1 to 67.3)
Done reading UCAC5 zone files...
Matched 1087 stars with the local copy of UCAC5.
The local UCAC5 search seems to be a success
Accuracy estimation diagnostic: 1083 matched stars entering correct_measured_positions(), 1178 with non-zero local correction accuracy
Estimated accuracy of the plate solution: 0.36" 
Accuracy estimation diagnostic: 1083 matched stars entering correct_measured_positions(), 1178 with non-zero local correction accuracy
Estimated accuracy of the plate solution: 0.36" 
Excluding outliers - 1083 stars left (next iteration limit 1192)
Stop iterations.


 The field is successfully solved and matched with the astrometric catalog! :)

SIP_REFIT: SIP order 2 trial: matched=1083 robust_rms=4.859 arcsec worst_quadrant_rms=23.981 arcsec
SIP_REFIT: SIP order 3 trial: matched=1083 robust_rms=0.523 arcsec worst_quadrant_rms=0.583 arcsec
SIP_REFIT: SIP order 5 trial: matched=1083 robust_rms=0.365 arcsec worst_quadrant_rms=0.403 arcsec
SIP_REFIT: selected SIP order 5
SIP_REFIT: order=5 matched=1083 robust_rms_before=0.876 arcsec robust_rms_before_corrected=0.378 arcsec robust_rms_after=0.365 arcsec worst_quadrant_rms_before=0.447 worst_quadrant_rms_after=0.403
SIP_REFIT: refit does not sufficiently improve on the solution it would replace (best worst-quadrant baseline 0.447 arcsec) - keeping the original
WCS_QUALITY_DIAG: file=fd_UMa-04-Q2b1x1_2026-08-05_23-52-36_20.00sec_-0.00C_LIGHT_0164.fits N_match=1083 sigma_overall_arcsec=0.387 sigma_q1_arcsec=0.352 sigma_q2_arcsec=0.393 sigma_q3_arcsec=0.402 sigma_q4_arcsec=0.514 n_q1=470 n_q2=162 n_q3=349 n_q4=102 worst_quadrant_to_overall_ratio=1.329
The image catalog is written to wcs_fd_UMa-04-Q2b1x1_2026-08-05_23-52-36_20.00sec_-0.00C_LIGHT_0164.fits.wcscat.ucac5
The DS9 region file with the matched stars is written to wcs_fd_UMa-04-Q2b1x1_2026-08-05_23-52-36_20.00sec_-0.00C_LIGHT_0164.fits.wcscat.ds9.reg
You may view it with the command:
 ds9 /data_ssd/NMW-TexasTech/workdir//img_2026-08-06_CI_UMa-04-Q2b1x1_004716_TTUQ2b1x1_1093296_9mG5zxor/fd_UMa-04-Q2b1x1_2026-08-05_23-52-36_20.00sec_-0.00C_LIGHT_0164.fits -region wcs_fd_UMa-04-Q2b1x1_2026-08-05_23-52-36_20.00sec_-0.00C_LIGHT_0164.fits.wcscat.ds9.reg
The astrometric residuals vector field is written to wcs_fd_UMa-04-Q2b1x1_2026-08-05_23-52-36_20.00sec_-0.00C_LIGHT_0164.fits.wcscat.astrometric_residuals
Option '-n' not using photometric catalogs, just stick with astrometry
opt '-i': 2 is the maximum number of iterations
############ /tmp/tmp.uCMn3WnmpK (6) ############
Parsing command line arguments...
The minor axis of the CCD chip should be 24.0 mm based on the derived pixel size of 3.8 um
Internal estimated FoV 605.3'
The guess is based on the FOCALLEN keyword.
Trying to blindly solve the plate (local solve-field or remote server)...
/data_ssd/NMW-TexasTech/workdir/vast_2026-08-06_CI_UMa-04-Q2b1x1_004716_TTUQ2b1x1_1093296_9mG5zxor/util/wcs_image_calibration.sh /data_ssd/NMW-TexasTech/workdir//img_2026-08-06_CI_UMa-04-Q2b1x1_004716_TTUQ2b1x1_1093296_9mG5zxor/fd_UMa-04-Q2b1x1_2026-08-05_23-53-40_20.00sec_-0.00C_LIGHT_0165.fits 605.0
Entering WCS image calibration mode.
ORIGINAL_FITSFILE=/data_ssd/NMW-TexasTech/workdir//img_2026-08-06_CI_UMa-04-Q2b1x1_004716_TTUQ2b1x1_1093296_9mG5zxor/fd_UMa-04-Q2b1x1_2026-08-05_23-53-40_20.00sec_-0.00C_LIGHT_0165.fits
FITSFILE before on_the_fly=/data_ssd/NMW-TexasTech/workdir//img_2026-08-06_CI_UMa-04-Q2b1x1_004716_TTUQ2b1x1_1093296_9mG5zxor/fd_UMa-04-Q2b1x1_2026-08-05_23-53-40_20.00sec_-0.00C_LIGHT_0165.fits
FITSFILE after on_the_fly=/data_ssd/NMW-TexasTech/workdir//img_2026-08-06_CI_UMa-04-Q2b1x1_004716_TTUQ2b1x1_1093296_9mG5zxor/fd_UMa-04-Q2b1x1_2026-08-05_23-53-40_20.00sec_-0.00C_LIGHT_0165.fits
verification OK: /data_ssd/NMW-TexasTech/workdir//img_2026-08-06_CI_UMa-04-Q2b1x1_004716_TTUQ2b1x1_1093296_9mG5zxor/fd_UMa-04-Q2b1x1_2026-08-05_23-53-40_20.00sec_-0.00C_LIGHT_0165.fits
It's not one of the telescopes that are know to produce images with good WCS solutions - will try to re-solve!
FITSFILE after on_the_fly=/data_ssd/NMW-TexasTech/workdir//img_2026-08-06_CI_UMa-04-Q2b1x1_004716_TTUQ2b1x1_1093296_9mG5zxor/fd_UMa-04-Q2b1x1_2026-08-05_23-53-40_20.00sec_-0.00C_LIGHT_0165.fits
WCS_IMAGE_NAME=wcs_fd_UMa-04-Q2b1x1_2026-08-05_23-53-40_20.00sec_-0.00C_LIGHT_0165.fits
WCS-calibrated image found: wcs_fd_UMa-04-Q2b1x1_2026-08-05_23-53-40_20.00sec_-0.00C_LIGHT_0165.fits
Checking if the catalog wcs_fd_UMa-04-Q2b1x1_2026-08-05_23-53-40_20.00sec_-0.00C_LIGHT_0165.fits.wcscat corresponding to the image wcs_fd_UMa-04-Q2b1x1_2026-08-05_23-53-40_20.00sec_-0.00C_LIGHT_0165.fits alredy exist and is non-empty...
Catalog wcs_fd_UMa-04-Q2b1x1_2026-08-05_23-53-40_20.00sec_-0.00C_LIGHT_0165.fits.wcscat corresponding to the image wcs_fd_UMa-04-Q2b1x1_2026-08-05_23-53-40_20.00sec_-0.00C_LIGHT_0165.fits found.
The catalog is in the new format, as expected.
The plate-solved (WCS-calibrated) image is saved to wcs_fd_UMa-04-Q2b1x1_2026-08-05_23-53-40_20.00sec_-0.00C_LIGHT_0165.fits
util/solve_plate_with_UCAC5 is preparing to read a catalog corresponding to the image /data_ssd/NMW-TexasTech/workdir//img_2026-08-06_CI_UMa-04-Q2b1x1_004716_TTUQ2b1x1_1093296_9mG5zxor/fd_UMa-04-Q2b1x1_2026-08-05_23-53-40_20.00sec_-0.00C_LIGHT_0165.fits
WCS catalog name: wcs_fd_UMa-04-Q2b1x1_2026-08-05_23-53-40_20.00sec_-0.00C_LIGHT_0165.fits.wcscat 
Excluding image region:    -1.0    -1.0     1.0     1.0  (defined in bad_region.lst)
Excluding image region:  7500.0     0.0  9576.0  6388.0  (defined in bad_region.lst)
Excluding image region:  1122.0  1550.0  1124.0  1552.0  (defined in bad_region.lst)
Excluding image region:  1637.0  2824.0  1639.0  2826.0  (defined in bad_region.lst)
Excluding image region:  1831.0  2839.0  1833.0  2841.0  (defined in bad_region.lst)
Excluding image region:  1905.0  4570.0  1907.0  4572.0  (defined in bad_region.lst)
Excluding image region:  2012.0  4693.0  2014.0  4695.0  (defined in bad_region.lst)
Excluding image region:  2397.0  4241.0  2399.0  4243.0  (defined in bad_region.lst)
Excluding image region:  2679.0  2807.0  2681.0  2809.0  (defined in bad_region.lst)
Excluding more image regions!.. (will not print them all)
Excluded a total of 31 image regions  (defined in bad_region.lst).
SExtractor catalog parsing summary: zero_flux=0, no_flux_err=0, no_mag=0, no_mag_err=0, low_SNR=0, blended=64, bad_region=182, passed=1377
Got 1377 stars (including 1133 good ones) from the SExtractor catalog wcs_fd_UMa-04-Q2b1x1_2026-08-05_23-53-40_20.00sec_-0.00C_LIGHT_0165.fits.wcscat 
util/solve_plate_with_UCAC5 got 1377 stars from the SExtractor catalog
Updated FoV from the plate-solved image: 938.0'
Seting catalog search parameters based on the expected field of view 938.0 arcmin
UCAC5 catalog search parameters:
                    catalog_search_parameters->search_radius_deg= 0.013028 (46.9 arcsec)
                    catalog_search_parameters->brightest_mag= 1.00
                    catalog_search_parameters->faintest_mag= 13.50
                    catalog_search_parameters->search_radius_second_step_deg 0.010422 (37.5 arcsec)

ITERATION 01 -- talking to VizieR, this might be slow!
UCAC5 search strategy: trying local copy first
Found a local copy of UCAC5
UCAC5 local query limit 5000: matching up to 5000 detected stars, deepening the UCAC5 window to mag 15.50
Reading UCAC5 zone files...
Searching UCAC5 zones 730 to 788 (Dec 56.1 to 67.3)
Done reading UCAC5 zone files...
Matched 1105 stars with the local copy of UCAC5.
The local UCAC5 search seems to be a success
Correcting the measured astrometric positions...
Accuracy estimation diagnostic: 1101 matched stars entering correct_measured_positions(), 1093 with non-zero local correction accuracy
Estimated accuracy of the plate solution: 0.36" 
Removing outliers...
Correcting the measured astrometric positions...
Accuracy estimation diagnostic: 1101 matched stars entering correct_measured_positions(), 1200 with non-zero local correction accuracy
Estimated accuracy of the plate solution: 0.36" 

ITERATION 02 -- talking to VizieR, this might be slow!
UCAC5 search strategy: trying local copy first
Found a local copy of UCAC5
UCAC5 local query limit 5000: matching up to 5000 detected stars, deepening the UCAC5 window to mag 15.50
Reading UCAC5 zone files...
Searching UCAC5 zones 730 to 788 (Dec 56.1 to 67.3)
Done reading UCAC5 zone files...
Matched 1106 stars with the local copy of UCAC5.
The local UCAC5 search seems to be a success
Accuracy estimation diagnostic: 1102 matched stars entering correct_measured_positions(), 1199 with non-zero local correction accuracy
Estimated accuracy of the plate solution: 0.37" 
Accuracy estimation diagnostic: 1102 matched stars entering correct_measured_positions(), 1199 with non-zero local correction accuracy
Estimated accuracy of the plate solution: 0.37" 
Excluding outliers - 1102 stars left (next iteration limit 1211)
Stop iterations.


 The field is successfully solved and matched with the astrometric catalog! :)

SIP_REFIT: SIP order 2 trial: matched=1102 robust_rms=4.916 arcsec worst_quadrant_rms=23.032 arcsec
SIP_REFIT: SIP order 3 trial: matched=1102 robust_rms=0.531 arcsec worst_quadrant_rms=0.581 arcsec
SIP_REFIT: SIP order 5 trial: matched=1102 robust_rms=0.379 arcsec worst_quadrant_rms=0.443 arcsec
SIP_REFIT: selected SIP order 5
SIP_REFIT: order=5 matched=1102 robust_rms_before=0.866 arcsec robust_rms_before_corrected=0.379 arcsec robust_rms_after=0.379 arcsec worst_quadrant_rms_before=0.428 worst_quadrant_rms_after=0.443
SIP_REFIT: refit does not sufficiently improve on the solution it would replace (best worst-quadrant baseline 0.428 arcsec) - keeping the original
WCS_QUALITY_DIAG: file=fd_UMa-04-Q2b1x1_2026-08-05_23-53-40_20.00sec_-0.00C_LIGHT_0165.fits N_match=1102 sigma_overall_arcsec=0.390 sigma_q1_arcsec=0.343 sigma_q2_arcsec=0.432 sigma_q3_arcsec=0.411 sigma_q4_arcsec=0.473 n_q1=489 n_q2=157 n_q3=356 n_q4=100 worst_quadrant_to_overall_ratio=1.213
The image catalog is written to wcs_fd_UMa-04-Q2b1x1_2026-08-05_23-53-40_20.00sec_-0.00C_LIGHT_0165.fits.wcscat.ucac5
The DS9 region file with the matched stars is written to wcs_fd_UMa-04-Q2b1x1_2026-08-05_23-53-40_20.00sec_-0.00C_LIGHT_0165.fits.wcscat.ds9.reg
You may view it with the command:
 ds9 /data_ssd/NMW-TexasTech/workdir//img_2026-08-06_CI_UMa-04-Q2b1x1_004716_TTUQ2b1x1_1093296_9mG5zxor/fd_UMa-04-Q2b1x1_2026-08-05_23-53-40_20.00sec_-0.00C_LIGHT_0165.fits -region wcs_fd_UMa-04-Q2b1x1_2026-08-05_23-53-40_20.00sec_-0.00C_LIGHT_0165.fits.wcscat.ds9.reg
The astrometric residuals vector field is written to wcs_fd_UMa-04-Q2b1x1_2026-08-05_23-53-40_20.00sec_-0.00C_LIGHT_0165.fits.wcscat.astrometric_residuals
Option '-n' not using photometric catalogs, just stick with astrometry
opt '-i': 2 is the maximum number of iterations
###################################
# Pre-local-correction WCS quality summary (see WCS_QUALITY_DIAG lines above)
ref1=UMa-04-Q2b1x1_2026-02-22_00-33-00_20.00sec_-14.90C_LIGHT_0278.fits sigma_overall=0.383 worst_q_ratio=1.173
ref2=UMa-04-Q2b1x1_2026-02-22_00-34-07_20.00sec_-14.90C_LIGHT_0279.fits sigma_overall=0.417 worst_q_ratio=1.152
new1=fd_UMa-04-Q2b1x1_2026-08-05_23-52-36_20.00sec_-0.00C_LIGHT_0164.fits sigma_overall=0.387 worst_q_ratio=1.329
new2=fd_UMa-04-Q2b1x1_2026-08-05_23-53-40_20.00sec_-0.00C_LIGHT_0165.fits sigma_overall=0.390 worst_q_ratio=1.213
reference average sigma_overall=0.4 worst_q_ratio=1.1625
warn-on-ratio threshold: 2.0x reference
###################################

Astrometric residual vector field (catalog-matched stars):

plot_astrometric_residuals_xy.py: wrote wcs_UMa-04-Q2b1x1_2026-02-22_00-33-00_20.00sec_-14.90C_LIGHT_0278_astrometric_residuals.png (4895 matched stars from wcs_UMa-04-Q2b1x1_2026-02-22_00-33-00_20.00sec_-14.90C_LIGHT_0278.fits.wcscat.astrometric_residuals, image 9576x6388, median residual 0.34 arcsec)


plot_astrometric_residuals_xy.py: wrote wcs_UMa-04-Q2b1x1_2026-02-22_00-34-07_20.00sec_-14.90C_LIGHT_0279_astrometric_residuals.png (4898 matched stars from wcs_UMa-04-Q2b1x1_2026-02-22_00-34-07_20.00sec_-14.90C_LIGHT_0279.fits.wcscat.astrometric_residuals, image 9576x6388, median residual 0.37 arcsec)


plot_astrometric_residuals_xy.py: wrote wcs_fd_UMa-04-Q2b1x1_2026-08-05_23-52-36_20.00sec_-0.00C_LIGHT_0164_astrometric_residuals.png (1083 matched stars from wcs_fd_UMa-04-Q2b1x1_2026-08-05_23-52-36_20.00sec_-0.00C_LIGHT_0164.fits.wcscat.astrometric_residuals, image 9576x6388, median residual 0.35 arcsec)


plot_astrometric_residuals_xy.py: wrote wcs_fd_UMa-04-Q2b1x1_2026-08-05_23-53-40_20.00sec_-0.00C_LIGHT_0165_astrometric_residuals.png (1102 matched stars from wcs_fd_UMa-04-Q2b1x1_2026-08-05_23-53-40_20.00sec_-0.00C_LIGHT_0165.fits.wcscat.astrometric_residuals, image 9576x6388, median residual 0.34 arcsec)


Copying WCS-calibrated images back to input directory
Saving fully-calibrated image wcs_fd_UMa-04-Q2b1x1_2026-08-05_23-52-36_20.00sec_-0.00C_LIGHT_0164.fits
INFO: FPACK_FULLY_CALIBRATED_IMAGE=no (not compressing the image)
'wcs_fd_UMa-04-Q2b1x1_2026-08-05_23-52-36_20.00sec_-0.00C_LIGHT_0164.fits' -> '/data_ssd/NMW-TexasTech/workdir//img_2026-08-06_CI_UMa-04-Q2b1x1_004716_TTUQ2b1x1_1093296_9mG5zxor/wcs_fd_UMa-04-Q2b1x1_2026-08-05_23-52-36_20.00sec_-0.00C_LIGHT_0164.fits'
Saving fully-calibrated image wcs_fd_UMa-04-Q2b1x1_2026-08-05_23-53-40_20.00sec_-0.00C_LIGHT_0165.fits
INFO: FPACK_FULLY_CALIBRATED_IMAGE=no (not compressing the image)
'wcs_fd_UMa-04-Q2b1x1_2026-08-05_23-53-40_20.00sec_-0.00C_LIGHT_0165.fits' -> '/data_ssd/NMW-TexasTech/workdir//img_2026-08-06_CI_UMa-04-Q2b1x1_004716_TTUQ2b1x1_1093296_9mG5zxor/wcs_fd_UMa-04-Q2b1x1_2026-08-05_23-53-40_20.00sec_-0.00C_LIGHT_0165.fits'
Preparing the HTML report for the field UMa-04-Q2b1x1 with default.sex.telephoto_lens_onlybrightstars_v1
No candidates found here
Prepared the HTML report for the field UMa-04-Q2b1x1 with default.sex.telephoto_lens_onlybrightstars_v1
*------ done with default.sex.telephoto_lens_onlybrightstars_v1 ------*
#### The local exclusion list is exclusion_list_local.txt ####
wait
*------ default.sex.telephoto_lens_vSTL ------*
'default.sex.telephoto_lens_vSTL' -> 'default.sex'
Starting VaST with default.sex.telephoto_lens_vSTL

  ./vast --noflagimage --starmatchraius 5 --matchstarnumber 500 --selectbestaperture --sysrem 0 --type 4 --maxsextractorflag 99 --UTC --nofind --nojdkeyword /data_ssd/NMW-TexasTech/reference_imgs/UMa-04-Q2b1x1_2026-02-22_00-33-00_20.00sec_-14.90C_LIGHT_0278.fits /data_ssd/NMW-TexasTech/reference_imgs/UMa-04-Q2b1x1_2026-02-22_00-34-07_20.00sec_-14.90C_LIGHT_0279.fits /data_ssd/NMW-TexasTech/workdir//img_2026-08-06_CI_UMa-04-Q2b1x1_004716_TTUQ2b1x1_1093296_9mG5zxor/fd_UMa-04-Q2b1x1_2026-08-05_23-52-36_20.00sec_-0.00C_LIGHT_0164.fits /data_ssd/NMW-TexasTech/workdir//img_2026-08-06_CI_UMa-04-Q2b1x1_004716_TTUQ2b1x1_1093296_9mG5zxor/fd_UMa-04-Q2b1x1_2026-08-05_23-53-40_20.00sec_-0.00C_LIGHT_0165.fits
  
Last  image: 2461258.70331328 06.08.2026 04:52:36.267 UTC
WARNING: VaST exited with code 1 on the field UMa-04-Q2b1x1 AFTER completing the measurements. This is a memory-management crash during cleanup (a VaST bug to report), NOT a wrong field / clouds / bad focus. The lightcurves were written, so the transient search continues.
____ VaST output (crashed during memory cleanup; the measurements above are complete) ____

--==VaST 1.0rc90==--

Parsing command line arguments...
opt 'F': Will NOT create flag images for SExtractor
opt '5': 5.000000 pix is the new fixed star matching radius!
opt 'b': Using 500 reference stars for image matching!
opt '3': Will try to select best aperture for each source!
opt 'y': 0 SysRem iterations will be conducted!
opt 't 4': robust linear magnitude calibration (vary zero-point and slope)
opt 'x': 99 is the maximum acceptable SExtractor flag!
WARNING: disabling the mag-size filter in order not to reject blended stars.
opt 'u': Stick with UTC time system, no conversion to TT will be done!
opt 'f': Run ./find_candidates manually!
opt 'k': "JD" keyword in FITS image header will be ignored!
INFO from vast_remove_directory(): Could not open directory: symlinks_to_images
INFO from vast_remove_directory(): Could not open directory: converted_images
INFO from vast_remove_directory(): Could not open directory: unpacked_images

Checking the list of input images specified on the command line ...
WARNING from replace_file_with_symlink_if_filename_contains_white_spaces() the input file /data_ssd/NMW-TexasTech/reference_imgs/UMa-04-Q2b1x1_2026-02-22_00-33-00_20.00sec_-14.90C_LIGHT_0278.fits is already a symlink and we do not allow symlinks on symlinks
WARNING from replace_file_with_symlink_if_filename_contains_white_spaces() the input file /data_ssd/NMW-TexasTech/reference_imgs/UMa-04-Q2b1x1_2026-02-22_00-34-07_20.00sec_-14.90C_LIGHT_0279.fits is already a symlink and we do not allow symlinks on symlinks

Looking for the list of input images with time corrections in vast_list_of_input_images_with_time_corrections.txt ... list not found.
This is OK if you specify the input images on the command line, not through this text file.
Checking write permissions for the current directory (/data_ssd/NMW-TexasTech/workdir/vast_2026-08-06_CI_UMa-04-Q2b1x1_004716_TTUQ2b1x1_1093296_9mG5zxor)...  OK
Found a system-wide installation of SExtractor
Cleaning old outNNNNN.dat files.
Done with cleaning!

 VaST was started with the following command line: 
./vast --noflagimage --starmatchraius 5 --matchstarnumber 500 --selectbestaperture --sysrem 0 --type 4 --maxsextractorflag 99 --UTC --nofind --nojdkeyword /data_ssd/NMW-TexasTech/reference_imgs/UMa-04-Q2b1x1_2026-02-22_00-33-00_20.00sec_-14.90C_LIGHT_0278.fits /data_ssd/NMW-TexasTech/reference_imgs/UMa-04-Q2b1x1_2026-02-22_00-34-07_20.00sec_-14.90C_LIGHT_0279.fits /data_ssd/NMW-TexasTech/workdir//img_2026-08-06_CI_UMa-04-Q2b1x1_004716_TTUQ2b1x1_1093296_9mG5zxor/fd_UMa-04-Q2b1x1_2026-08-05_23-52-36_20.00sec_-0.00C_LIGHT_0164.fits /data_ssd/NMW-TexasTech/workdir//img_2026-08-06_CI_UMa-04-Q2b1x1_004716_TTUQ2b1x1_1093296_9mG5zxor/fd_UMa-04-Q2b1x1_2026-08-05_23-53-40_20.00sec_-0.00C_LIGHT_0165.fits 


Preparing to process 4 input FITS images...


######## Forcing special settings for the transient detection ########
transient search mode: disabling the mag-size filter as it should be switched off when running a transient search!
transient search mode: disabling the bad image filter as it will not help during the transient search!
transient search mode: will not try to gues image saturation limit
transient search mode: no UTC-to-TT time system conversion will be performed!!!
transient search mode: setting the maximum acceptable SExtractor flag to 3
transient search mode: disabling rejectin of images with elliptical stars
transient search mode: not discarding large sources
################
Excluding image region:    -1.0    -1.0     1.0     1.0  (defined in bad_region.lst)
Excluding image region:  7500.0     0.0  9576.0  6388.0  (defined in bad_region.lst)
Excluding image region:  1122.0  1550.0  1124.0  1552.0  (defined in bad_region.lst)
Excluding image region:  1637.0  2824.0  1639.0  2826.0  (defined in bad_region.lst)
Excluding image region:  1831.0  2839.0  1833.0  2841.0  (defined in bad_region.lst)
Excluding image region:  1905.0  4570.0  1907.0  4572.0  (defined in bad_region.lst)
Excluding image region:  2012.0  4693.0  2014.0  4695.0  (defined in bad_region.lst)
Excluding image region:  2397.0  4241.0  2399.0  4243.0  (defined in bad_region.lst)
Excluding image region:  2679.0  2807.0  2681.0  2809.0  (defined in bad_region.lst)
Excluding more image regions!.. (will not print them all)
Excluded a total of 31 image regions  (defined in bad_region.lst).
Setting the fixed star match radius of 5.00 pix
We have 4 images to process.
SExtractor catalog cache: restored UMa-04-Q2b1x1_2026-02-22_00-33-00_20.00sec_-14.90C_LIGHT_0278.fits catalog from cache
SExtractor catalog cache: restored UMa-04-Q2b1x1_2026-02-22_00-34-07_20.00sec_-14.90C_LIGHT_0279.fits catalog from cache
Running SExtractor in 3 parallel threads...
Using the catalog image00001.cat SExtracted earlier from the image /data_ssd/NMW-TexasTech/reference_imgs/UMa-04-Q2b1x1_2026-02-22_00-33-00_20.00sec_-14.90C_LIGHT_0278.fits
Using the catalog image00002.cat SExtracted earlier from the image /data_ssd/NMW-TexasTech/reference_imgs/UMa-04-Q2b1x1_2026-02-22_00-34-07_20.00sec_-14.90C_LIGHT_0279.fits
The gain value (GAIN=0.830) from default.sex will be used for image /data_ssd/NMW-TexasTech/workdir//img_2026-08-06_CI_UMa-04-Q2b1x1_004716_TTUQ2b1x1_1093296_9mG5zxor/fd_UMa-04-Q2b1x1_2026-08-05_23-52-36_20.00sec_-0.00C_LIGHT_0164.fits
The above guess is based on the non-default gain value specified in default.sex by user
Parent process says: we are done fork()ing.
Waiting for thread 2 to finish...
autodetect_aperture() is running SExtractor on /data_ssd/NMW-TexasTech/workdir//img_2026-08-06_CI_UMa-04-Q2b1x1_004716_TTUQ2b1x1_1093296_9mG5zxor/fd_UMa-04-Q2b1x1_2026-08-05_23-52-36_20.00sec_-0.00C_LIGHT_0164.fits
Excluding image region:    -1.0    -1.0     1.0     1.0  (defined in bad_region.lst)
Excluding image region:  7500.0     0.0  9576.0  6388.0  (defined in bad_region.lst)
Excluding image region:  1122.0  1550.0  1124.0  1552.0  (defined in bad_region.lst)
Excluding image region:  1637.0  2824.0  1639.0  2826.0  (defined in bad_region.lst)
Excluding image region:  1831.0  2839.0  1833.0  2841.0  (defined in bad_region.lst)
Excluding image region:  1905.0  4570.0  1907.0  4572.0  (defined in bad_region.lst)
Excluding image region:  2012.0  4693.0  2014.0  4695.0  (defined in bad_region.lst)
Excluding image region:  2397.0  4241.0  2399.0  4243.0  (defined in bad_region.lst)
Excluding image region:  2679.0  2807.0  2681.0  2809.0  (defined in bad_region.lst)
Excluding more image regions!.. (will not print them all)
Excluded a total of 31 image regions  (defined in bad_region.lst).
autodetect_aperture() is doing a preliminary SExtractor run to determine an appropriate aperture size
sex -c default.sex  -PARAMETERS_NAME autodetect_aper.param -CATALOG_NAME autodetect_aper_image00003.cat  /data_ssd/NMW-TexasTech/workdir//img_2026-08-06_CI_UMa-04-Q2b1x1_004716_TTUQ2b1x1_1093296_9mG5zxor/fd_UMa-04-Q2b1x1_2026-08-05_23-52-36_20.00sec_-0.00C_LIGHT_0164.fits > image00003.cat.sex_log 2>&1
The gain value (GAIN=0.830) from default.sex will be used for image /data_ssd/NMW-TexasTech/workdir//img_2026-08-06_CI_UMa-04-Q2b1x1_004716_TTUQ2b1x1_1093296_9mG5zxor/fd_UMa-04-Q2b1x1_2026-08-05_23-53-40_20.00sec_-0.00C_LIGHT_0165.fits
The above guess is based on the non-default gain value specified in default.sex by user
autodetect_aperture() is running SExtractor on /data_ssd/NMW-TexasTech/workdir//img_2026-08-06_CI_UMa-04-Q2b1x1_004716_TTUQ2b1x1_1093296_9mG5zxor/fd_UMa-04-Q2b1x1_2026-08-05_23-53-40_20.00sec_-0.00C_LIGHT_0165.fits
Excluding image region:    -1.0    -1.0     1.0     1.0  (defined in bad_region.lst)
Excluding image region:  7500.0     0.0  9576.0  6388.0  (defined in bad_region.lst)
Excluding image region:  1122.0  1550.0  1124.0  1552.0  (defined in bad_region.lst)
Excluding image region:  1637.0  2824.0  1639.0  2826.0  (defined in bad_region.lst)
Excluding image region:  1831.0  2839.0  1833.0  2841.0  (defined in bad_region.lst)
Excluding image region:  1905.0  4570.0  1907.0  4572.0  (defined in bad_region.lst)
Excluding image region:  2012.0  4693.0  2014.0  4695.0  (defined in bad_region.lst)
Excluding image region:  2397.0  4241.0  2399.0  4243.0  (defined in bad_region.lst)
Excluding image region:  2679.0  2807.0  2681.0  2809.0  (defined in bad_region.lst)
Excluding more image regions!.. (will not print them all)
Excluded a total of 31 image regions  (defined in bad_region.lst).
autodetect_aperture() is doing a preliminary SExtractor run to determine an appropriate aperture size
sex -c default.sex  -PARAMETERS_NAME autodetect_aper.param -CATALOG_NAME autodetect_aper_image00004.cat  /data_ssd/NMW-TexasTech/workdir//img_2026-08-06_CI_UMa-04-Q2b1x1_004716_TTUQ2b1x1_1093296_9mG5zxor/fd_UMa-04-Q2b1x1_2026-08-05_23-53-40_20.00sec_-0.00C_LIGHT_0165.fits > image00004.cat.sex_log 2>&1
autodetect_aperture() is doing the main SExtractor run
sex  -PARAMETERS_NAME default.param -PHOT_APERTURES 4.7,4.7,4.2,5.1,5.6,6.1 -VERBOSE_TYPE NORMAL -CATALOG_NAME image00004.cat /data_ssd/NMW-TexasTech/workdir//img_2026-08-06_CI_UMa-04-Q2b1x1_004716_TTUQ2b1x1_1093296_9mG5zxor/fd_UMa-04-Q2b1x1_2026-08-05_23-53-40_20.00sec_-0.00C_LIGHT_0165.fits > image00004.cat.sex_log 2>&1
autodetect_aperture() is doing the main SExtractor run
sex  -PARAMETERS_NAME default.param -PHOT_APERTURES 4.7,4.7,4.2,5.1,5.6,6.1 -VERBOSE_TYPE NORMAL -CATALOG_NAME image00003.cat /data_ssd/NMW-TexasTech/workdir//img_2026-08-06_CI_UMa-04-Q2b1x1_004716_TTUQ2b1x1_1093296_9mG5zxor/fd_UMa-04-Q2b1x1_2026-08-05_23-52-36_20.00sec_-0.00C_LIGHT_0164.fits > image00003.cat.sex_log 2>&1
autodetect_aperture() is done with image /data_ssd/NMW-TexasTech/workdir//img_2026-08-06_CI_UMa-04-Q2b1x1_004716_TTUQ2b1x1_1093296_9mG5zxor/fd_UMa-04-Q2b1x1_2026-08-05_23-53-40_20.00sec_-0.00C_LIGHT_0165.fits
Waiting for thread 1 to finish...
autodetect_aperture() is done with image /data_ssd/NMW-TexasTech/workdir//img_2026-08-06_CI_UMa-04-Q2b1x1_004716_TTUQ2b1x1_1093296_9mG5zxor/fd_UMa-04-Q2b1x1_2026-08-05_23-52-36_20.00sec_-0.00C_LIGHT_0164.fits


Done with SExtractor!

TIMING SExtractor: 4 seconds


Matching stars between images!

No manually selected comparison stars file manually_selected_comparison_stars.lst which is fine.
Processing  /data_ssd/NMW-TexasTech/reference_imgs/UMa-04-Q2b1x1_2026-02-22_00-33-00_20.00sec_-14.90C_LIGHT_0278.fits
9576x6388 FITS image /data_ssd/NMW-TexasTech/reference_imgs/UMa-04-Q2b1x1_2026-02-22_00-33-00_20.00sec_-14.90C_LIGHT_0278.fits
Trying to guess the time system by parsing the comment string 'Time of observation (UTC)'
Time system set from the comment to DATE-OBS keyword: 'Time of observation (UTC)'
The input time system is identified as: UTC (blank if unknown)
Setting observation date using DATE-OBS keyword: 2026-02-22T06:33:00.9983165
Setting observation time using DATE-OBS keyword: 2026-02-22T06:33:00.9983165

Observing time converted to the "standard" FITS header format:
DATE-OBS= 2026-02-22T06:33:00.998
EXPTIME = 20.000

Using the catalog image00001.cat SExtracted earlier from the image /data_ssd/NMW-TexasTech/reference_imgs/UMa-04-Q2b1x1_2026-02-22_00-33-00_20.00sec_-14.90C_LIGHT_0278.fits
Exposure 20 sec, 22.02.2026 06:33:00.998 UTC = JD(UTC) 2461093.77304396 mid. exp.
The reference image star  7935.749    49.755 is rejected, see bad_region.lst
The reference image star  7770.594    30.729 is rejected, see bad_region.lst
The reference image star  9388.315    14.245 is rejected, see bad_region.lst
The reference image star  8961.811    12.279 is rejected, see bad_region.lst
The reference image star  9474.824     9.529 is rejected, see bad_region.lst
The reference image star  8208.772     8.421 is rejected, see bad_region.lst
The reference image star  8619.213     1.423 is rejected, see bad_region.lst
The reference image star  8259.933     4.630 is rejected, see bad_region.lst
The reference image star  8039.105     2.048 is rejected, see bad_region.lst
The reference image star  8892.671     2.427 is rejected, see bad_region.lst
Excluding more reference image stars falling at bad regions!.. (will not print them all)
SExtractor output filtering results:
 * passed selection: 29752, (29750 good for image matching)
 * rejected as having no flux measurement: 0
 * rejected as having SNR<3.0: 17
 * rejected inside rectangles defined in bad_region.lst: 7386
 * rejected close to frame edge: 144
 * rejected as being too small (<1.2 pix): 0
 * rejected as being too large (>5.0 pix): 0
 * rejected as outliers in mag-size plot: 0
 * rejected as having SExtractor flags > 99 and <= 7: 0
 * rejected as having hopelessly bad SExtractor flags (>7): 34
 * rejected due to an external image flag: 0
 * rejected as having bad PSF fit: 0
---
You may change some of the filtering parameters by editing src/vast_limits.h and re-running 'make'.

Please note: the CCD position-dependent magnitude correction will be applied.
get_detection_limit_sn(): Detection limit: -7.21
Detection limit from the magnitude-SNR relation= -7.2  (5.0 sigma detection)
The simple faintest star detection limit= -6.6
80 percent brightest stars detection limit= -7.7
Selected detection limit= -7.7
Final detection limit= -7.7 (after subtracting MAG_TRANSIENT_ABOVE_THE_REFERENCE_FRAME_LIMIT=0.0)

Parameter box for transient search:    10.05.0 pix): 0
 * rejected as outliers in mag-size plot: 0
 * rejected as having SExtractor flags > 99 and <= 7: 0
 * rejected as having hopelessly bad SExtractor flags (>7): 29
 * rejected due to an external image flag: 0
 * rejected as having bad PSF fit: 0
---
You may change some of the filtering parameters by editing src/vast_limits.h and re-running 'make'.
    29873 * detected, using  502/ 500 * for reference/current image matching, fraction_of_ambiguous_matches= 0.015064, number_of_ambiguous_matches=450 
refining the coordinate transformation... [CVPOLY iter 1: order=1 pairs=27869 inliers=27869 rms 0.45 -> 0.44 pix, max corner correction 0.2 pix] fraction_of_ambiguous_matches= 0.012319, number_of_ambiguous_matches=368 
27866 * matched, [CVPOLY iter 2: order=1 pairs=27866 inliers=27866 rms 0.41 -> 0.41 pix, max corner correction 0.0 pix] fraction_of_ambiguous_matches= 0.006561, number_of_ambiguous_matches=196 
27863 * matched (2nd iteration). [CVPOLY iter 3: order=1 pairs=27863 inliers=27863 rms 0.35 -> 0.35 pix, max corner correction 0.0 pix] fraction_of_ambiguous_matches= 0.002645, number_of_ambiguous_matches=79 
27809 * matched (3rd iteration). Success!
  rotation [degrees] =  -0.006
    29873 stars detected, 27809 stars matched
Performing magnitude calibration using automatically selected comparison stars
Expecting to find at least 40 * for magnitude calibration
We have N_good_stars = 26438, N_manually_selected_comparison_stars = 0
Using 26438 stars for magnitude calibration (before filtering).
Iteratively removing outliers from the linear mag-mag relation (unweighted fit)...
After removing outliers in (X,Y,dm) plane, we are left with 26437 stars for magnitude calibration.
Using the linear CCD position-dependent magnitude correction:
 delta_m = 0.00000*X_pix +0.00000*Y_pix -0.00628
Iteratively removing outliers from the mag-mag relation (weighted linear/polynomial fit)...
Computing robust linear magnitude calibration.
Used 25048 stars for magnitude calibration (after filtering).
get_detection_limit_sn(): Detection limit: -7.21
    31816 objects stored in memory (1000000 max.)
Magnitude calibration is performed successfully!
Saving observations to the cache... OK
memory:  214896 kB used, 254080 kB peak, 65263848 kB available RAM
processed 2 of 4 images ( 50.0%)



Processing  /data_ssd/NMW-TexasTech/workdir//img_2026-08-06_CI_UMa-04-Q2b1x1_004716_TTUQ2b1x1_1093296_9mG5zxor/fd_UMa-04-Q2b1x1_2026-08-05_23-52-36_20.00sec_-0.00C_LIGHT_0164.fits
9576x6388 FITS image /data_ssd/NMW-TexasTech/workdir//img_2026-08-06_CI_UMa-04-Q2b1x1_004716_TTUQ2b1x1_1093296_9mG5zxor/fd_UMa-04-Q2b1x1_2026-08-05_23-52-36_20.00sec_-0.00C_LIGHT_0164.fits
Trying to guess the time system by parsing the comment string 'Time of observation (UTC)'
Time system set from the comment to DATE-OBS keyword: 'Time of observation (UTC)'
The input time system is identified as: UTC (blank if unknown)
Setting observation date using DATE-OBS keyword: 2026-08-06T04:52:36.2678875
Setting observation time using DATE-OBS keyword: 2026-08-06T04:52:36.2678875

Observing time converted to the "standard" FITS header format:
DATE-OBS= 2026-08-06T04:52:36.267
EXPTIME = 20.000

Using the catalog image00003.cat SExtracted earlier from the image /data_ssd/NMW-TexasTech/workdir//img_2026-08-06_CI_UMa-04-Q2b1x1_004716_TTUQ2b1x1_1093296_9mG5zxor/fd_UMa-04-Q2b1x1_2026-08-05_23-52-36_20.00sec_-0.00C_LIGHT_0164.fits
The star  7660.506    14.155 is rejected, see bad_region.lst
The star  7712.530     1.967 is rejected, see bad_region.lst
The star  7556.305     2.471 is rejected, see bad_region.lst
The star  8615.542    23.229 is rejected, see bad_region.lst
The star  9255.775    28.160 is rejected, see bad_region.lst
The star  7634.064    25.517 is rejected, see bad_region.lst
The star  8275.109    49.135 is rejected, see bad_region.lst
The star  8712.601    36.652 is rejected, see bad_region.lst
The star  7830.357    33.259 is rejected, see bad_region.lst
The star  7556.682    41.254 is rejected, see bad_region.lst
Excluding more stars falling at bad regions!.. (will not print them all)
SExtractor output filtering results:
 * passed selection: 8680
 * rejected as having no flux measurement: 0
 * rejected as having SNR<3.0: 2
 * rejected inside rectangles defined in bad_region.lst: 795
 * rejected close to frame edge: 33
 * rejected as being too small (<1.2 pix): 0
 * rejected as being too large (>4.7 pix): 0
 * rejected as outliers in mag-size plot: 0
 * rejected as having SExtractor flags > 99 and <= 7: 0
 * rejected as having hopelessly bad SExtractor flags (>7): 35
 * rejected due to an external image flag: 0
 * rejected as having bad PSF fit: 0
---
You may change some of the filtering parameters by editing src/vast_limits.h and re-running 'make'.
     8680 * detected, using  145/ 500 * for reference/current image matching, fraction_of_ambiguous_matches= 0.000157, number_of_ambiguous_matches=5 
refining the coordinate transformation... [CVPOLY iter 1: order=3 pairs=6143 inliers=6143 rms 0.46 -> 0.28 pix, max corner correction 2.4 pix] fraction_of_ambiguous_matches= 0.000157, number_of_ambiguous_matches=5 
6142 * matched, [CVPOLY iter 2: order=1 pairs=6142 inliers=6142 rms 0.25 -> 0.25 pix, max corner correction 0.0 pix] fraction_of_ambiguous_matches= 0.000157, number_of_ambiguous_matches=5 
6141 * matched (2nd iteration). [CVPOLY iter 3: order=1 pairs=6141 inliers=6141 rms 0.22 -> 0.22 pix, max corner correction 0.0 pix] fraction_of_ambiguous_matches= 0.000126, number_of_ambiguous_matches=4 
6140 * matched (3rd iteration). Success!
  rotation [degrees] = 174.211
     8680 stars detected,  6140 stars matched
Performing magnitude calibration using automatically selected comparison stars
Expecting to find at least 40 * for magnitude calibration
We have N_good_stars = 5604, N_manually_selected_comparison_stars = 0
Using 5604 stars for magnitude calibration (before filtering).
Iteratively removing outliers from the linear mag-mag relation (unweighted fit)...
After removing outliers in (X,Y,dm) plane, we are left with 5133 stars for magnitude calibration.
Using the linear CCD position-dependent magnitude correction:
 delta_m = 0.00020*X_pix +0.00005*Y_pix -0.96082
ERROR in magnitude calibration: fabs(lin_mag_A * X_im_size + lin_mag_B * Y_im_size + lin_mag_C) > MAX_LIN_CORR_MAG
Used 5133 stars for magnitude calibration (after filtering).
get_detection_limit_sn(): Detection limit: -7.39
 ERROR!!! Magnitude calibration failure. Dropping image. 
    31816 objects stored in memory (1000000 max.)
memory:  213868 kB used, 254080 kB peak, 65263848 kB available RAM
processed 3 of 4 images ( 75.0%)



Processing  /data_ssd/NMW-TexasTech/workdir//img_2026-08-06_CI_UMa-04-Q2b1x1_004716_TTUQ2b1x1_1093296_9mG5zxor/fd_UMa-04-Q2b1x1_2026-08-05_23-53-40_20.00sec_-0.00C_LIGHT_0165.fits
9576x6388 FITS image /data_ssd/NMW-TexasTech/workdir//img_2026-08-06_CI_UMa-04-Q2b1x1_004716_TTUQ2b1x1_1093296_9mG5zxor/fd_UMa-04-Q2b1x1_2026-08-05_23-53-40_20.00sec_-0.00C_LIGHT_0165.fits
Trying to guess the time system by parsing the comment string 'Time of observation (UTC)'
Time system set from the comment to DATE-OBS keyword: 'Time of observation (UTC)'
The input time system is identified as: UTC (blank if unknown)
Setting observation date using DATE-OBS keyword: 2026-08-06T04:53:40.3698644
Setting observation time using DATE-OBS keyword: 2026-08-06T04:53:40.3698644

Observing time converted to the "standard" FITS header format:
DATE-OBS= 2026-08-06T04:53:40.369
EXPTIME = 20.000

Using the catalog image00004.cat SExtracted earlier from the image /data_ssd/NMW-TexasTech/workdir//img_2026-08-06_CI_UMa-04-Q2b1x1_004716_TTUQ2b1x1_1093296_9mG5zxor/fd_UMa-04-Q2b1x1_2026-08-05_23-53-40_20.00sec_-0.00C_LIGHT_0165.fits
The star  7660.999    13.635 is rejected, see bad_region.lst
The star  7713.091     1.659 is rejected, see bad_region.lst
The star  7557.025     2.066 is rejected, see bad_region.lst
The star  8616.169    22.511 is rejected, see bad_region.lst
The star  9256.272    27.118 is rejected, see bad_region.lst
The star  7634.322    25.119 is rejected, see bad_region.lst
The star  8275.596    48.494 is rejected, see bad_region.lst
The star  8713.069    36.166 is rejected, see bad_region.lst
The star  7557.086    40.736 is rejected, see bad_region.lst
The star  7831.402    32.925 is rejected, see bad_region.lst
Excluding more stars falling at bad regions!.. (will not print them all)
SExtractor output filtering results:
 * passed selection: 8656
 * rejected as having no flux measurement: 0
 * rejected as having SNR<3.0: 1
 * rejected inside rectangles defined in bad_region.lst: 800
 * rejected close to frame edge: 34
 * rejected as being too small (<1.2 pix): 0
 * rejected as being too large (>4.7 pix): 0
 * rejected as outliers in mag-size plot: 0
 * rejected as having SExtractor flags > 99 and <= 7: 0
 * rejected as having hopelessly bad SExtractor flags (>7): 27
 * rejected due to an external image flag: 0
 * rejected as having bad PSF fit: 0
---
You may change some of the filtering parameters by editing src/vast_limits.h and re-running 'make'.
     8656 * detected, using  145/ 500 * for reference/current image matching, fraction_of_ambiguous_matches= 0.000157, number_of_ambiguous_matches=5 
refining the coordinate transformation... [CVPOLY iter 1: order=3 pairs=6079 inliers=6079 rms 0.72 -> 0.30 pix, max corner correction 4.3 pix] fraction_of_ambiguous_matches= 0.000094, number_of_ambiguous_matches=3 
6079 * matched, [CVPOLY iter 2: order=1 pairs=6079 inliers=6079 rms 0.27 -> 0.27 pix, max corner correction 0.0 pix] fraction_of_ambiguous_matches= 0.000094, number_of_ambiguous_matches=3 
6077 * matched (2nd iteration). [CVPOLY iter 3: order=1 pairs=6077 inliers=6077 rms 0.21 -> 0.21 pix, max corner correction 0.0 pix] fraction_of_ambiguous_matches= 0.000063, number_of_ambiguous_matches=2 
6077 * matched (3rd iteration). Success!
  rotation [degrees] = 174.230
     8656 stars detected,  6077 stars matched
Performing magnitude calibration using automatically selected comparison stars
Expecting to find at least 40 * for magnitude calibration
We have N_good_stars = 5553, N_manually_selected_comparison_stars = 0
Using 5553 stars for magnitude calibration (before filtering).
Iteratively removing outliers from the linear mag-mag relation (unweighted fit)...
After removing outliers in (X,Y,dm) plane, we are left with 5047 stars for magnitude calibration.
Using the linear CCD position-dependent magnitude correction:
 delta_m = 0.00023*X_pix +0.00007*Y_pix -1.14093
ERROR in magnitude calibration: fabs(lin_mag_A * X_im_size + lin_mag_B * Y_im_size + lin_mag_C) > MAX_LIN_CORR_MAG
Used 5047 stars for magnitude calibration (after filtering).
get_detection_limit_sn(): Detection limit: -7.39
 ERROR!!! Magnitude calibration failure. Dropping image. 
    31816 objects stored in memory (1000000 max.)
memory:  213868 kB used, 254080 kB peak, 65263848 kB available RAM
processed 4 of 4 images (100.0%)
TIMING matching_and_photometry: 1 seconds
Done with measurements! =)

Total number of measurements 59625 (59625 measurements stored in RAM)
Freeing up some memory...  Sorting the measurements cached in memory...
Writing lightcurve (outNNNNN.dat) files...
TIMING lightcurve_write: 0 seconds
The lightcurve files have been written, freeing up more memory...
Creating vast_image_details.log ... 

Writing summary file: vast_summary.log ...  OK
Selecting the best aperture for each source
Aperture with index 0 (REFERENCE_APERTURE_DIAMETER +0.00*REFERENCE_APERTURE_DIAMETER) seems best for  5216 stars
Aperture with index 1 (REFERENCE_APERTURE_DIAMETER +0.00*REFERENCE_APERTURE_DIAMETER) seems best for     0 stars
Aperture with index 2 (REFERENCE_APERTURE_DIAMETER -0.10*REFERENCE_APERTURE_DIAMETER) seems best for  7972 stars
Aperture with index 3 (REFERENCE_APERTURE_DIAMETER +0.10*REFERENCE_APERTURE_DIAMETER) seems best for  4294 stars
Aperture with index 4 (REFERENCE_APERTURE_DIAMETER +0.20*REFERENCE_APERTURE_DIAMETER) seems best for  3550 stars
Aperture with index 5 (REFERENCE_APERTURE_DIAMETER +0.30*REFERENCE_APERTURE_DIAMETER) seems best for  6777 stars

done!  =)
TIMING select_aperture: 0 seconds
Computing lightcurve statistics...  Will not compute variability indexes for objects having <1 points in lightcurve
You may disable this by commenting out the line '#define DROP_LIGHTCURVES_WITH_SMALL_NUMBER_OF_POINTS_FROM_ALL_PLOTS' in src/vast_limits.h an re-compiling VaST with 'make'

Computing, please wait a bit
....................................................................................................................................................................................................................................................................................
vast_lightcurve_statistics.log: 27653 objects, the longest string is 383 bytes.
Allocating memory for resorting the file.



----***** VaST processing WARNING *****----
You asked VaST to process 4 images, but only 1 were actually matched to the reference one.
Please investigate this!



**************************************************************
This error might be a bug, but it is far more likely that it is caused by 
inappropriate input data. A few simple things to check in the diagnostic
messages printed above (or the vast*.log files):
 * How many of the input images are matched?
 * Does the number of detected stars on each image look reasonable?
 * Do images have a sufficient overlap of at least about 20 percent?

You may run
 ./sextract_single_image /path/to/my/image/file.fit
to see how well VaST detects stars with the current SExtractor settings
(star detection settings can be changed in the default.sex configuration
file, see various examples in the VaST directory).

If you cannot identify the problem, please e-mail Kirill Sokolovsky 
Please try to describe the problem in details and, if possible, attach vast_summary.log
file and a few example images. If the images are too big to be sent by e-mail, please 
upload them through a web-form http://scan.sai.msu.ru/upload/
**************************************************************

Low percentage of matched images - we'll declare this an unsuccessful VaST run (exit code 1)
_____________________
SExtractor catalog cache: saved UMa-04-Q2b1x1_2026-02-22_00-33-00_20.00sec_-14.90C_LIGHT_0278.fits.cat to cache
SExtractor catalog cache: saved UMa-04-Q2b1x1_2026-02-22_00-34-07_20.00sec_-14.90C_LIGHT_0279.fits.cat to cache
VaST run complete with default.sex.telephoto_lens_vSTL
The four input images were /data_ssd/NMW-TexasTech/reference_imgs/UMa-04-Q2b1x1_2026-02-22_00-33-00_20.00sec_-14.90C_LIGHT_0278.fits /data_ssd/NMW-TexasTech/reference_imgs/UMa-04-Q2b1x1_2026-02-22_00-34-07_20.00sec_-14.90C_LIGHT_0279.fits /data_ssd/NMW-TexasTech/workdir//img_2026-08-06_CI_UMa-04-Q2b1x1_004716_TTUQ2b1x1_1093296_9mG5zxor/fd_UMa-04-Q2b1x1_2026-08-05_23-52-36_20.00sec_-0.00C_LIGHT_0164.fits /data_ssd/NMW-TexasTech/workdir//img_2026-08-06_CI_UMa-04-Q2b1x1_004716_TTUQ2b1x1_1093296_9mG5zxor/fd_UMa-04-Q2b1x1_2026-08-05_23-53-40_20.00sec_-0.00C_LIGHT_0165.fits
Last  image: 2461258.70331328 06.08.2026 04:52:36.267 UTC
ERROR running VaST on the field UMa-04-Q2b1x1 (less than 4 images processed)
exp_start= 22.02.2026 06:33:00.998  exp=   20.000  JD= 2461093.77304396  ap=  5.0  rotation=   0.000  *detected= 29752  *matched= 29752  status=OK     /data_ssd/NMW-TexasTech/reference_imgs/UMa-04-Q2b1x1_2026-02-22_00-33-00_20.00sec_-14.90C_LIGHT_0278.fits
exp_start= 22.02.2026 06:34:07.716  exp=   20.000  JD= 2461093.77381616  ap=  5.0  rotation=  -0.006  *detected= 29873  *matched= 27809  status=OK     /data_ssd/NMW-TexasTech/reference_imgs/UMa-04-Q2b1x1_2026-02-22_00-34-07_20.00sec_-14.90C_LIGHT_0279.fits
exp_start= 06.08.2026 04:52:36.267  exp=   20.000  JD= 2461258.70331328  ap=  4.7  rotation= 174.211  *detected=  8680  *matched=  6140  status=ERROR  /data_ssd/NMW-TexasTech/workdir//img_2026-08-06_CI_UMa-04-Q2b1x1_004716_TTUQ2b1x1_1093296_9mG5zxor/fd_UMa-04-Q2b1x1_2026-08-05_23-52-36_20.00sec_-0.00C_LIGHT_0164.fits
exp_start= 06.08.2026 04:53:40.369  exp=   20.000  JD= 2461258.70405520  ap=  4.7  rotation= 174.230  *detected=  8656  *matched=  6077  status=ERROR  /data_ssd/NMW-TexasTech/workdir//img_2026-08-06_CI_UMa-04-Q2b1x1_004716_TTUQ2b1x1_1093296_9mG5zxor/fd_UMa-04-Q2b1x1_2026-08-05_23-53-40_20.00sec_-0.00C_LIGHT_0165.fits
########### Completed UMa-04-Q2b1x1 ###########
The analysis was running at tau
We are allowed to update the exclusion list at tau host
Found ../exclusion_list_TTUQ2.txt
#### The exclusion list before filtering-out asteroids, bad pixels and adding Gaia sources ####
###################################################################################
renamed 'exclusion_list_index_html.txt_noasteroids' -> 'exclusion_list_index_html.txt'
renamed 'exclusion_list_index_html.txt_nohotpixels' -> 'exclusion_list_index_html.txt'
# Count candidates with no identification (that also don't look like hot pix)
Found 0 unidentified candidates (excluding asteroids, hot pixels and known variable stars).
###################################################################################
0 candidates found (excluding asteroids and hot pixels)
This does not look like a test run
###################################################################################
exclusion_list_gaiadr2.txt NOT FOUND
exclusion_list_apass.txt NOT FOUND
IS_THIS_TEST_RUN=NO  ALLOW_EXCLUSION_LIST_UPDATE= YES
#### Nothing to add to the exclusion list ####
The observatory MPC code is V36
############################################################
Positions of planets computed with util/planet_finder/main.py for JD(UT)2461258.70331328 -observatory V36
07:45:32.31 +20:23:14.2 Mercury (-0.3mag)
11:55:37.62 -00:03:31.7 Venus (-4.3mag)
05:43:23.53 +23:32:37.6 Mars (1.3mag)
08:41:07.24 +18:48:01.5 Jupiter (-1.8mag)
00:56:33.03 +03:16:47.7 Saturn (0.6mag)
04:11:29.59 +20:56:20.3 Uranus (5.8mag)
00:16:12.85 +00:13:59.2 Neptune (7.7mag)
20:28:20.10 -23:29:23.9 Pluto (14.4mag)
02:45:54.28 +20:29:44.3 Moon (-10.3mag)
-rw-r--r-- 1 apache apache 363 Aug  6 00:49 planets.txt
############################################################
Positions of selected moons from JPL HORIZONS for JD(UT)2461258.70331328:
08:41:14.31 +18:47:31.4 Io (6.0mag)
08:41:04.23 +18:48:14.8 Europa (6.3mag)
08:41:03.56 +18:48:21.1 Ganymede (5.6mag)
08:40:53.36 +18:49:03.8 Callisto (6.7mag)
08:38:43.14 +18:46:10.7 Himalia (15.7mag)
08:41:05.61 +18:48:09.2 Thebe (16.6mag)
08:38:13.78 +18:45:06.2 Elara (17.7mag)
08:45:13.13 +18:28:26.6 Pasiphae (17.9mag)
08:44:26.12 +18:57:51.6 Carme (19.0mag)
00:56:30.87 +03:17:14.6 Titan (8.4mag)
00:56:27.33 +03:16:51.7 Rhea (9.7mag)
00:56:36.61 +03:15:09.7 Iapetus (11.1mag)
00:56:19.65 +03:17:02.2 Hyperion (14.4mag)
00:55:58.08 +03:10:14.5 Phoebe (16.5mag)
-rw-r--r-- 1 apache apache 568 Aug  6 00:49 moons.txt
############################################################
Positions of selected spacecraft from JPL HORIZONS for JD(UT)2461258.70331328:
18:55:37.45 -24:04:03.5 JWST
17:13:00.28 +42:11:04.9 Chandra
09:18:24.61 -52:33:15.2 XMM-Newton
-rw-r--r-- 1 apache apache 96 Aug  6 00:49 spacecraft.txt
############################################################
Positions of bright comets computed with util/comet_finder/main.py for JD(UT)2461258.70331328 -observatory V36
03:11:22.08 +17:12:21.3 17.7mag P/1996 R2 (Lagerkvist)
18:02:24.92 -34:38:24.3 14.0mag P/2010 H2 (Vales)
06:51:54.00 -68:49:37.2 17.3mag C/2014 UN271 (Bernardinelli-Bernstein)
06:09:16.75 +32:57:03.9 17.7mag C/2017 K2 (PANSTARRS)
03:37:39.72 +36:43:21.8 16.7mag P/2021 N1 (ZTF)
22:40:17.62 +31:33:59.6 17.3mag C/2022 E2 (ATLAS)
06:41:27.78 +26:34:32.5 16.8mag C/2022 N2 (PANSTARRS)
10:19:41.95 +28:33:38.1 17.0mag C/2022 QE78 (ATLAS)
09:27:30.33 +05:17:43.2 17.9mag C/2022 R6 (PANSTARRS)
15:12:09.03 -12:12:26.1 17.9mag P/2023 B1 (PANSTARRS)
21:13:26.56 +66:14:01.7 17.9mag C/2023 H5 (Lemmon)
15:49:55.50 -12:44:50.2 14.3mag C/2023 R1 (PANSTARRS)
08:05:48.90 +31:15:17.7 15.2mag C/2024 E1 (Wierzchos)
15:07:17.98 +15:36:58.9 17.7mag C/2024 G6 (ATLAS)
19:05:41.86 +42:57:37.7 13.7mag C/2024 J3 (ATLAS)
21:13:41.76 +49:04:37.9 17.6mag C/2024 R4 (PANSTARRS)
05:13:30.42 -12:59:39.2 15.5mag C/2024 T5 (ATLAS)
06:54:54.13 +24:30:40.8 17.9mag C/2025 J1 (Borisov)
07:29:56.38 -15:51:51.6 17.7mag C/2025 R3 (PANSTARRS)
10:30:05.93 +21:01:56.5 17.3mag C/2025 V2 (Rankin)
12:56:55.74 +02:29:00.0 17.0mag C/2025 Y1 (ATLAS)
16:03:42.63 +78:01:13.2 16.8mag C/2026 A2 (Bok)
03:06:42.51 +46:08:41.1 17.1mag C/2026 B2 (Sun-Gao)
11:45:07.86 +08:19:49.4 17.3mag A/2026 E1
21:56:05.73 -26:26:51.4 6.9mag 10P/Tempel
11:27:45.31 -03:16:30.9 16.2mag 29P/Schwassmann-Wachmann
04:36:43.88 +32:15:36.6 18.0mag 47P/Ashbrook-Jackson
11:03:34.01 +05:18:11.8 17.2mag 63P/Wild
00:54:17.94 -05:22:40.2 15.4mag 65P/Gunn
05:30:57.26 +20:43:47.2 13.7mag 78P/Gehrels
20:39:48.67 -23:17:23.1 17.8mag 84P/Giclas
02:58:42.19 +13:32:16.9 16.7mag 88P/Howell
07:50:42.56 +27:55:52.1 16.1mag 93P/Lovas
04:00:40.48 +16:05:19.0 17.6mag 112P/Urata-Niijima
05:49:47.99 +30:30:59.7 16.3mag 114P/Wiseman-Skiff
09:13:41.88 +26:59:22.0 15.0mag 123P/West-Hartley
11:39:41.58 -09:29:25.6 17.1mag 124P/Mrkos
05:33:33.98 +21:11:10.6 16.1mag 128P/Shoemaker-Holt
06:25:02.90 +18:59:49.5 17.9mag 131P/Mueller
00:03:42.01 +03:25:22.0 17.6mag 139P/Vaisala-Oterma
03:21:34.36 -19:44:56.8 14.0mag 161P/Hartley-IRAS
07:09:09.98 +37:41:18.6 15.8mag 162P/SidingSpring
15:50:17.53 +39:28:34.4 12.3mag 169P/NEAT
02:39:16.04 +09:28:29.9 17.6mag 220P/McNaught
16:40:34.76 -09:56:34.8 17.6mag 235P/LINEAR
20:23:44.96 -52:50:55.3 17.8mag 259P/Garradd
03:16:13.44 +24:18:38.7 15.4mag 260P/McNaught
06:59:16.40 +37:45:18.1 17.3mag 295P/LINEAR
15:09:50.62 +03:21:40.2 17.7mag 391P/Kowalski
08:59:02.53 +18:28:30.1 17.9mag 450P/LONEOS
-rw-r--r-- 1 apache apache 2.5K Aug  6 00:49 comets.txt
############################################################
List of recent ASAS-SN transients from https://www.astronomy.ohio-state.edu/asassn/transients.html :
22:08:07.63 -53:03:58.90  AT2026wek  2026-08-3.82 17.17
14:51:51.34 +66:13:24.60  ASASSN-26ev  2026-08-2.15 14.02
12:06:50.79 -36:16:06.20  SN2026wgm  2026-08-1.73 15.61
16:56:36.90 -59:29:26.00  ASASSN-26er  2026-07-25.82 15.09
01:21:27.83 -10:37:05.00  SN2026vbh  2026-07-25.61 15.97
21:17:31.59 +22:25:50.90  ASASSN-26eq  2026-07-24.37 15.13
18:53:36.89 +16:56:43.60  ASASSN-26ep  2026-07-23.47 -4.06
12:18:47.98 -30:48:47.50  ASASSN-26et  2026-07-22.76 13.98
13:00:47.82 +15:42:17.60  SN2026uwk  2026-07-21.75 16.38
18:52:31.11 -32:28:00.90  ASASSN-26en  2026-07-21.77 14.63
14:42:58.01 -62:32:59.10  ASASSN-26es  2026-07-20.79 15.36
20:12:45.57 -32:53:13.00  ASASSN-26em  2026-07-20.94 16.83
18:54:24.33 -46:11:51.70  ASASSN-26eu  2026-07-20.93 14.86
03:18:56.99 -80:55:10.40  AT2026ugi  2026-07-20.03 17.12
18:43:58.40 +24:22:41.80  ASASSN-26eo  2026-07-19.36 16.16
04:50:01.03 -02:22:33.80  ASASSN-26ej  2026-07-16.17 17.02
18:34:55.28 -31:41:00.90  ASASSN-26ek  2026-07-16.24 15.73
17:07:43.61 -44:21:53.50  ASASSN-26el  2026-07-15.86 16.01
14:45:08.35 +24:13:12.30  ASASSN-26ei  2026-07-16.17 16.46
10:00:46.44 -32:36:31.10  AT 2023mhb  2026-07-14.73 16.67
14:39:37.45 -11:22:36.20  AT 2026unl  2026-07-15.27 17.11
10:49:42.57 -11:25:55.80  ASASSN-26eh  2026-07-14.72 16.58
19:33:53.06 -07:15:00.80  ASASSN-22le  2026-07-14.15 15.5
02:45:40.52 -27:55:30.30  ASASSN-26ef  2026-07-12.35 15.86
23:26:43.80 +04:42:39.70  SN 2026qtn  2026-07-12.22 16.47
02:19:17.26 +28:57:15.40  ASASSN-26ec  2026-07-11.53 2.78
18:31:15.56 -05:34:31.50  AT2026stb  2026-07-11.28 -1.29
13:36:08.24 +23:29:05.00  AT2026pjf  2026-07-10.18 -0.72
17:33:39.82 +04:22:36.70  SN2026pir  2026-07-9.86 -0.66
11:21:41.26 -50:33:36.30  ASASSN-26ed  2026-07-8.8 -1.3
23:41:42.11 +26:29:49.10  AT2026qil  2026-07-9.3 16.15
20:21:30.50 -32:03:40.10  ASASSN-26ee  2026-07-7.22 15.53
19:37:44.09 -05:35:42.80  AT2026ryu  2026-07-7.17 14.88
11:06:55.46 -04:07:04.50  AT2026qqg  2026-07-5.01 16.82
19:07:23.69 -74:13:37.30  AT2026qly  2026-07-5.02 17.31
17:57:43.80 +27:18:40.10  ASASSN-26ea  2026-07-5.07 16.67
19:59:01.43 -32:07:34.30  ASASSN-26eb  2026-07-4.97 15.52
18:46:50.35 -57:44:13.20  SN 2026qqp  2026-07-5.03 -0.92
19:17:31.69 -39:55:29.90  ASASSN-26dz  2026-07-5.14 15.91
19:14:31.37 +12:03:52.90  AT 2026rdg  2026-07-3.43 11.81
04:05:50.09 -70:24:34.40  AT 2026qpr  2026-06-30.4 15.96
13:45:37.49 -05:59:35.80  SN 2026pub  2026-06-30.09 16.01
16:41:15.63 +39:17:14.70  SN 2026pel  2026-06-26.38 16.07
10:14:40.19 -35:38:21.30  ASASSN-26dy  2026-06-25.99 15.63
14:47:21.56 -40:15:51.30  ASASSN-26dv  2026-06-23.03 14.62
13:38:49.79 -77:21:06.70  ASASSN-26dw  2026-06-23.04 16.09
00:59:27.90 +33:08:13.20  SN 2026mke  2026-06-22.39 17.13
11:10:44.73 -30:20:45.50  SN 2026nmv  2026-06-22.06 16.56
21:36:15.68 -21:19:12.50  AT2026oxh  2026-06-22.15 17.14
17:31:38.38 -56:05:51.90  ASASSN-26dx  2026-06-22.02 14.72
14:10:13.44 -38:46:46.10  AT2026pvk  2026-06-22.06 16.53
20:56:47.23 -18:31:05.20  AT2026plb  2026-06-21.31 16.4
15:44:29.68 +21:00:59.30  SN2026ore  2026-06-21.29 17.57
23:50:05.98 -14:01:41.30  AT2026oxl  2026-06-21.52 17.64
17:36:54.73 -18:10:04.20  AT2026ouj  2026-06-20.92 15.15
00:34:04.08 -30:22:09.20  AT2026ntk  2026-06-18.09 17.34
20:49:13.39 +25:17:59.20  ASASSN-26du  2026-06-15.39 15.93
23:09:30.84 +32:40:42.00  SN2026oxc  2026-06-14.35 16.83
02:02:26.67 +32:04:22.70  AT2026ovz  2026-06-14.6 15.52
21:26:28.11 -72:31:19.50  AT2026nwc  2026-06-11 17.05
17:54:57.33 +26:32:34.20  SN 2026odc  2026-06-11.23 17.62
13:55:59.94 +17:30:37.20  SN 2026nyq  2026-06-11.1 16.24
00:50:45.14 -71:38:36.90  ASASSN-26dt  2026-06-11.13 10.22
14:42:19.73 +19:11:35.60  SN2026nyp  2026-06-10.3 16.32
12:23:23.92 +12:56:43.50  SN2026mta  2026-06-8.29 16.69
12:30:18.51 +47:12:33.20  SN2026oao  2026-06-9.32 17.02
10:51:05.21 -42:28:56.60  AT2026nvf  2026-06-8.12 16.75
13:50:22.48 -07:35:00.00  SN2026npn  2026-06-8.02 17.58
00:56:07.17 +43:01:43.20  ASASSN-26dq  2026-06-7.43 13.58
01:07:49.46 +41:59:43.70  SN 2026obc  2026-06-7.43 15.15
21:11:25.22 +14:14:31.90  ASASSN-26dr  2026-06-7.24 16.24
06:21:27.06 -65:16:42.00  ASASSN-26ds  2026-06-2.97 15.02
20:07:38.15 -21:07:05.40  SN2026mho  2026-05-25.18 -1.12
11:29:42.55 +79:01:03.10  AT2026min  2026-05-24.21 16.63
11:44:33.11 -68:48:32.90  ASASSN-26no  2026-05-24.03 8.35
19:00:42.82 -48:31:01.60  ASASSN-26dp  2026-05-22.31 -3.28
14:23:56.72 -58:37:47.60  ASASSN-26dn  2026-05-20.01 14.64
11:24:54.06 +47:57:01.60  AT2026nma  2026-05-20.29 15.46
21:27:08.58 +33:24:38.10  AT2026lli  2026-05-19.34 15.86
00:31:01.41 -13:38:51.70  AT2026nad  2026-05-19.39 15.34
15:16:06.61 -79:16:32.40  ASASSN-26dm  2026-05-19.03 14.44
11:24:25.21 -59:23:19.10  ASASSN-26dl  2026-05-18.02 13.55
13:45:51.52 -53:16:01.00  ASASSN-26dk  2026-05-18.16 12.96
02:05:49.69 -30:29:09.60  ASASSN-26dh  2026-05-18.43 15.37
17:50:22.87 -39:42:33.90  ASASSN-26dj  2026-05-17.05 15.7
01:13:11.60 -33:25:16.10  ASASSN-26dg  2026-05-13.41 16.8
16:44:31.77 -27:15:18.40  AT2026mhn  2026-05-12.33 15.8
09:46:31.08 -33:41:51.00  ASASSN-26di  2026-05-12.14 14.63
21:23:11.57 -19:09:45.00  AT2026kwu  2026-05-12.26 16.9
14:20:14.30 -30:20:51.90  AT2026ktm  2026-05-12.06 17.21
14:41:39.01 -37:13:46.40  AT2026lkm  2026-05-11.18 16.89
12:59:50.45 -10:58:38.80  SN2026kep  2026-05-9.06 17.5
13:37:29.61 -29:50:30.90  AT2026lkd  2026-05-9.09 17.23
09:46:42.01 -14:52:03.60  SN2026kmo  2026-05-8.99 17.51
15:03:05.28 +22:02:03.40  AT2026lxf  2026-05-8.07 13.88
10:23:49.41 -20:57:25.30  ASASSN-26df  2026-05-8.21 16.52
22:14:40.56 +05:04:51.60  2026lda  2026-05-7.56 16.2
21:35:33.81 -14:05:16.30  ASASSN-26de  2026-05-6.29 14.51
16:21:49.13 -61:36:14.60  ASASSN-26dd  2026-05-5.15 15.93
14:26:40.22 -24:48:37.50  AT2026lig  2026-05-4.27 14.63
-rw-r--r-- 1 apache apache 5.7K Aug  6 00:49 asassn_transients_list.txt
############################################################
Truncated list of TOCP transients from http://www.cbat.eps.harvard.edu/unconf/tocp.html :
00:42:51.20 +41:16:59.4  PNV J00425120+4116594  2022-10-26.135  19.3mag
12:24:25.10 +28:47:12.0  TCP J12242510+2847120  2026-05-31.6015  14.8mag
00:56:07.13 +43:01:40.6  TCP J00560713+4301406  2026-06-01.4135  12.2mag
00:42:41.64 +41:15:16.2  PNV J00424164+4115162  2026-06-02.029  17.4mag
00:42:38.68 +41:15:58.2  PNV J00423868+4115582  2026-06-05.1224  19.97Umag
19:00:42.95 -48:31:01.7  PNV J19004295-4831017  2026-05-25.0752  14.2mag
09:55:21.28 +69:02:52.6  PNV J09552128+6902526  2026-06-13.933  18.9mag
19:51:21.42 +37:06:40.0  TCP J19512142+3706400  2026-06-17.2942  16.8mag
19:57:03.87 +37:41:46.4  TCP J19570387+3741464  2026-06-18.2638  17.5mag
00:42:32.04 +41:10:28.3  PNV J00423204+4110283  2026-06-26.059  16.6mag
02:19:17.36 +28:57:15.8  TCP J02191736+2857158  2026-07-12.3549  12.5mag
00:44:56.43 +41:57:41.6  PNV J00445643+4157416  2026-07-13.8026  17.98Cmag
00:42:55.36 +41:17:27.0  PNV J00425536+4117270  2026-07-20.1813  17.7mag
20:35:43.64 +61:31:32.9  TCP J20354364+6131329  2026-07-20.5443  14.4mag
21:17:31.48 +22:25:51.0  TCP J21173148+2225510  2026-07-23.5577  14.8mag
00:41:24.04 +40:49:02.8  PNV J00412404+4049028  2026-07-25.0157  18.7mag
00:43:04.26 +41:02:28.6  PNV J00430426+4102286  2026-07-26.1512  20mag
14:51:51.40 +66:13:24.0  TCP J14515140+6613240  2026-07-29.2561  13.5mag
00:43:06.15 +41:22:08.2  PNV J00430615+4122082  2026-07-30.0085  19.4mag
00:41:33.23 +41:10:12.2  PNV J00413323+4110122  2026-08-02.8913  17.1mag
-rw-r--r-- 1 apache apache 189K Aug  6 00:49 tocp_transients_list.txt
############################################################
Truncated list of recent TNS transients from https://www.wis-tns.org/ :
18:55:34.805 +34:42:05.78  AT 2026vky  2026-06-22.39 21.01
15:27:13.875 -10:50:21.14  AT 2026vkx  2026-06-14.35 20.55
13:36:43.476 +25:28:01.16  AT 2026vkw  2026-06-25.38 20.6
04:43:04.292 -16:08:54.64  AT 2026vkv  2026-01-12.30 21.72
04:48:25.928 -18:19:58.05  AT 2026vku  2026-01-26.25 21.35
12:55:24.686 +13:58:33.13  AT 2026vkt  2026-06-05.34 21.42
11:39:28.884 +47:23:59.43  AT 2026vks  2026-01-14.61 21.82
10:26:55.799 -14:09:20.42  AT 2026vkr  2026-01-13.55 21.98
12:26:22.284 +20:06:25.68  AT 2026vkq  2026-02-13.60 20.86
12:08:12.778 +41:30:56.83  AT 2026vkp  2026-06-15.27 20.88
05:11:50.298 -12:02:24.75  AT 2026vko  2026-02-15.23 20.49
00:35:37.087 -45:29:22.45  AT 2026vkn  2026-06-26.42 23.13
04:11:06.535 -49:23:35.67  AT 2026vkm  2026-07-09.42 22.31
23:40:19.411 -26:01:53.34  AT 2026vkl  2026-07-20.59 21.47
22:23:27.160 +00:54:32.97  AT 2026vkk  2026-07-14.55 21.17
21:14:05.875 -09:55:36.50  AT 2026vkj  2026-07-20.46 21.9
17:17:56.970 +19:09:32.22  AT 2026vki  2026-07-19.39 21.8
17:18:18.165 +24:21:20.44  AT 2026vkh  2026-07-19.40 21.78
18:14:11.533 +25:31:50.45  AT 2026vkg  2026-07-16.29 20.95
22:50:03.729 +40:38:42.44  AT 2026vkf  2026-07-20.53 20.32
-rw-r--r-- 1 apache apache 87K Aug  6 00:49 tns_transients_list.txt

=== Transient Factory Profiling ===
Started: Thu Aug  6 00:49:10 CDT 2026
=======================================
TIMING SExtractor: 2 seconds
TIMING matching_and_photometry: 0 seconds
TIMING lightcurve_write: 0 seconds
TIMING select_aperture: 0 seconds
    VAST_RUN_default.sex.telephoto_lens_onlybrightstars_v1: 2s (0.03 min)
    WCS_CACHE_SETUP: 0s (0.00 min)
    WCS_CALIBRATION_AND_EPHEMERIS: 24s (0.40 min)
    PLATE_VERIFY_AND_POINTING: 0s (0.00 min)
    UCAC5_PLATE_SOLVING: 0s (0.00 min)
    MAGNITUDE_CALIBRATION: 5s (0.08 min)
    MAGCAL_SANITY_CHECK: 0s (0.00 min)
      FILTER_MAGNITUDE_CONSOLIDATED: 0s (0.00 min)
      FILTER_FRAME_EDGE: 0s (0.00 min)
      FILTER_SECOND_EPOCH_VERIFY: 0s (0.00 min)
    CANDIDATE_FILTERING_TOTAL: 0s (0.00 min)
    EXCLUSION_LIST_PREPARATION: 0s (0.00 min)
    SEEING_AND_LIMITING_MAG: 0s (0.00 min)
    WAIT_FOR_UCAC5: 2s (0.03 min)
    WCS_IMAGE_ARCHIVING: 0s (0.00 min)
    HTML_REPORT: 0s (0.00 min)
  SE_CONFIG_default.sex.telephoto_lens_onlybrightstars_v1: 33s (0.55 min)
TIMING SExtractor: 4 seconds
TIMING matching_and_photometry: 1 seconds
TIMING lightcurve_write: 0 seconds
TIMING select_aperture: 0 seconds
    VAST_RUN_default.sex.telephoto_lens_vSTL: 7s (0.12 min)
FIELD_UMa-04-Q2b1x1: 53s (0.88 min)
=======================================
TOTAL_RUNTIME: 56s (0.93 min)
Finished: Thu Aug  6 00:50:06 CDT 2026